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PMC:7143804 / 981-13453 JSONTXT

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LitCovid-PubTator

Id Subject Object Predicate Lexical cue tao:has_database_id
40 144-164 Species denotes Covid-19 coronavirus Tax:2697049
41 181-187 Species denotes People Tax:9606
42 392-398 Species denotes humans Tax:9606
43 562-579 Species denotes Coxiella burnetii Tax:777
44 591-610 Species denotes Mycobacterium bovis Tax:1765
45 612-618 Species denotes bovine Tax:9913
46 807-813 Species denotes humans Tax:9606
47 885-898 Species denotes coronaviruses Tax:11118
48 944-952 Species denotes patients Tax:9606
49 1055-1061 Species denotes people Tax:9606
50 724-735 Species denotes Escherichia Tax:562
51 103-111 Disease denotes zoonoses MESH:D015047
52 209-217 Disease denotes Zoonoses MESH:D015047
53 429-437 Disease denotes zoonotic MESH:D015047
54 524-532 Disease denotes zoonoses MESH:D015047
55 541-551 Disease denotes infections MESH:D007239
56 583-588 Disease denotes fever MESH:D005334
57 619-631 Disease denotes tuberculosis MESH:D014376
58 668-681 Disease denotes Salmonellosis MESH:D012480
59 1145-1153 Disease denotes infected MESH:D007239
63 2244-2252 Gene denotes helicase Gene:164045
64 1769-1774 Species denotes human Tax:9606
65 1760-1768 Disease denotes infected MESH:D007239
69 4492-4500 Chemical denotes polymers MESH:D011108
70 5052-5057 Chemical denotes metal MESH:D008670
71 5088-5090 Chemical denotes Cu MESH:D003300
76 6300-6320 Chemical denotes polydimethylsiloxane MESH:C013830
77 6322-6326 Chemical denotes PDMS MESH:C013830
78 6737-6760 Chemical denotes cyclic olefin copolymer
79 6762-6765 Chemical denotes COC
86 7237-7242 Chemical denotes metal MESH:D008670
87 7376-7381 Chemical denotes metal MESH:D008670
88 7434-7437 Chemical denotes COC
89 7446-7451 Chemical denotes metal MESH:D008670
90 7571-7576 Chemical denotes metal MESH:D008670
91 8234-8239 Chemical denotes metal MESH:D008670
95 8510-8517 Chemical denotes polymer MESH:D011108
96 9036-9041 Chemical denotes metal MESH:D008670
97 9073-9078 Chemical denotes metal MESH:D008670

LitCovid-PD-FMA-UBERON

Id Subject Object Predicate Lexical cue fma_id
T4 1919-1940 Body_part denotes deoxyribonucleic acid http://purl.org/sig/ont/fma/fma74412
T5 1942-1945 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T6 1971-1974 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T7 1978-1994 Body_part denotes ribonucleic acid http://purl.org/sig/ont/fma/fma67095
T8 1996-1999 Body_part denotes RNA http://purl.org/sig/ont/fma/fma67095
T9 2161-2164 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T10 2168-2171 Body_part denotes RNA http://purl.org/sig/ont/fma/fma67095
T11 2369-2372 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T12 2376-2379 Body_part denotes RNA http://purl.org/sig/ont/fma/fma67095
T13 2522-2525 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T14 2530-2533 Body_part denotes RNA http://purl.org/sig/ont/fma/fma67095
T15 2644-2647 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T16 3662-3665 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T17 4588-4591 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T18 5788-5791 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T19 5795-5798 Body_part denotes RNA http://purl.org/sig/ont/fma/fma67095
T20 7484-7490 Body_part denotes plasma http://purl.org/sig/ont/fma/fma62970
T21 8524-8527 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T22 9310-9313 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T23 10161-10167 Body_part denotes genome http://purl.org/sig/ont/fma/fma84116
T24 10217-10220 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T25 10274-10277 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T26 10404-10407 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T27 10603-10606 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T28 10713-10716 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T29 10767-10770 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T30 10910-10913 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T31 11686-11689 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412
T32 12371-12374 Body_part denotes DNA http://purl.org/sig/ont/fma/fma74412

LitCovid-PD-UBERON

Id Subject Object Predicate Lexical cue uberon_id
T1 6703-6708 Body_part denotes scale http://purl.obolibrary.org/obo/UBERON_0002542

LitCovid-PD-MONDO

Id Subject Object Predicate Lexical cue mondo_id
T8 103-111 Disease denotes zoonoses http://purl.obolibrary.org/obo/MONDO_0025481
T9 209-217 Disease denotes Zoonoses http://purl.obolibrary.org/obo/MONDO_0025481
T10 524-532 Disease denotes zoonoses http://purl.obolibrary.org/obo/MONDO_0025481
T11 541-551 Disease denotes infections http://purl.obolibrary.org/obo/MONDO_0005550
T12 581-588 Disease denotes Q-fever http://purl.obolibrary.org/obo/MONDO_0019186
T13 612-631 Disease denotes bovine tuberculosis http://purl.obolibrary.org/obo/MONDO_0025136
T14 619-631 Disease denotes tuberculosis http://purl.obolibrary.org/obo/MONDO_0018076
T15 668-681 Disease denotes Salmonellosis http://purl.obolibrary.org/obo/MONDO_0000827
T16 699-717 Disease denotes Campylobacteriosis http://purl.obolibrary.org/obo/MONDO_0005688
T17 5543-5546 Disease denotes PID http://purl.obolibrary.org/obo/MONDO_0000922
T18 5577-5580 Disease denotes PID http://purl.obolibrary.org/obo/MONDO_0000922
T19 8639-8668 Disease denotes Sexually Transmitted Diseases http://purl.obolibrary.org/obo/MONDO_0021681

LitCovid-PD-CLO

Id Subject Object Predicate Lexical cue
T9 47-48 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T10 227-228 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T11 251-257 http://purl.obolibrary.org/obo/NCBITaxon_33208 denotes animal
T12 338-345 http://purl.obolibrary.org/obo/NCBITaxon_33208 denotes animals
T13 355-366 http://purl.obolibrary.org/obo/NCBITaxon_7742 denotes vertebrates
T14 380-387 http://purl.obolibrary.org/obo/NCBITaxon_33208 denotes animals
T15 392-398 http://purl.obolibrary.org/obo/NCBITaxon_9606 denotes humans
T16 452-460 http://purl.obolibrary.org/obo/NCBITaxon_2 denotes bacteria
T17 462-469 http://purl.obolibrary.org/obo/NCBITaxon_10239 denotes viruses
T18 807-813 http://purl.obolibrary.org/obo/NCBITaxon_9606 denotes humans
T19 993-994 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T20 1116-1123 http://purl.obolibrary.org/obo/NCBITaxon_33208 denotes animals
T21 1563-1564 http://purl.obolibrary.org/obo/CLO_0001020 denotes A
T22 1572-1573 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T23 1769-1774 http://purl.obolibrary.org/obo/NCBITaxon_9606 denotes human
T24 1778-1784 http://purl.obolibrary.org/obo/NCBITaxon_33208 denotes animal
T25 1958-1966 http://purl.obolibrary.org/obo/NCBITaxon_2 denotes bacteria
T26 2012-2019 http://purl.obolibrary.org/obo/NCBITaxon_10239 denotes viruses
T27 2027-2028 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T28 2341-2343 http://purl.obolibrary.org/obo/CLO_0053733 denotes 11
T29 2355-2356 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T30 2401-2402 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T31 2431-2432 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T32 2548-2555 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T33 2801-2802 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T34 2833-2838 http://purl.obolibrary.org/obo/UBERON_0007688 denotes field
T35 3163-3164 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T36 3341-3342 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T37 3348-3355 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T38 3653-3658 http://purl.obolibrary.org/obo/UBERON_0007688 denotes field
T39 4009-4010 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T40 4048-4049 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T41 4415-4416 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T42 4553-4554 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T43 4560-4567 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T44 4664-4665 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T45 5233-5234 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T46 5341-5342 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T47 5507-5508 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T48 5639-5640 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T49 5769-5770 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T50 5776-5783 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T51 5846-5849 http://purl.obolibrary.org/obo/CLO_0050884 denotes ten
T52 5936-5943 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T53 5977-5978 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T54 6421-6422 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T55 6621-6623 http://purl.obolibrary.org/obo/CLO_0053794 denotes 41
T56 6938-6945 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices
T57 7022-7024 http://purl.obolibrary.org/obo/CLO_0053794 denotes 41
T58 7119-7120 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T59 7210-7212 http://purl.obolibrary.org/obo/CLO_0053794 denotes 41
T60 7255-7256 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T61 7336-7337 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T62 7464-7465 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T63 7484-7490 http://purl.obolibrary.org/obo/UBERON_0001969 denotes plasma
T64 7502-7509 http://purl.obolibrary.org/obo/OBI_0100026 denotes organic
T65 7502-7509 http://purl.obolibrary.org/obo/UBERON_0000468 denotes organic
T66 7787-7790 http://purl.obolibrary.org/obo/CLO_0051582 denotes has
T67 7791-7792 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T68 8496-8497 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T69 8620-8632 http://purl.obolibrary.org/obo/OBI_0000245 denotes Organization
T70 8716-8723 http://purl.obolibrary.org/obo/OBI_0000968 denotes Devices
T71 8747-8748 http://purl.obolibrary.org/obo/CLO_0001020 denotes A
T72 8932-8933 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T73 8934-8940 http://purl.obolibrary.org/obo/OBI_0000968 denotes device
T74 8991-8998 http://purl.obolibrary.org/obo/CLO_0009985 denotes focuses
T75 9351-9352 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T76 9592-9598 http://purl.obolibrary.org/obo/OBI_0000968 denotes device
T77 10032-10033 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T78 10057-10058 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T79 10143-10144 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T80 10222-10224 http://purl.obolibrary.org/obo/CLO_0001407 denotes 52
T81 10326-10327 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T82 10585-10586 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T83 10625-10626 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T84 11163-11164 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T85 11204-11205 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T86 11508-11509 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T87 11677-11678 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T88 11914-11915 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T89 12080-12083 http://purl.obolibrary.org/obo/CLO_0051582 denotes has
T90 12319-12320 http://purl.obolibrary.org/obo/CLO_0001020 denotes a
T91 12464-12471 http://purl.obolibrary.org/obo/OBI_0000968 denotes devices

LitCovid-PD-CHEBI

Id Subject Object Predicate Lexical cue chebi_id
T4 278-283 Chemical denotes group http://purl.obolibrary.org/obo/CHEBI_24433
T5 1300-1305 Chemical denotes group http://purl.obolibrary.org/obo/CHEBI_24433
T6 1919-1940 Chemical denotes deoxyribonucleic acid http://purl.obolibrary.org/obo/CHEBI_16991
T7 1936-1940 Chemical denotes acid http://purl.obolibrary.org/obo/CHEBI_37527
T8 1942-1945 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T9 1971-1974 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T10 1978-1994 Chemical denotes ribonucleic acid http://purl.obolibrary.org/obo/CHEBI_33697
T11 1990-1994 Chemical denotes acid http://purl.obolibrary.org/obo/CHEBI_37527
T12 1996-1999 Chemical denotes RNA http://purl.obolibrary.org/obo/CHEBI_33697
T13 2161-2164 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T14 2168-2171 Chemical denotes RNA http://purl.obolibrary.org/obo/CHEBI_33697
T15 2278-2281 Chemical denotes HDA http://purl.obolibrary.org/obo/CHEBI_17314
T16 2369-2372 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T17 2376-2379 Chemical denotes RNA http://purl.obolibrary.org/obo/CHEBI_33697
T18 2388-2391 Chemical denotes dye http://purl.obolibrary.org/obo/CHEBI_37958
T19 2522-2525 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T20 2530-2533 Chemical denotes RNA http://purl.obolibrary.org/obo/CHEBI_33697
T21 2644-2647 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T22 3662-3665 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T23 4492-4500 Chemical denotes polymers http://purl.obolibrary.org/obo/CHEBI_33839
T24 4588-4591 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T25 5088-5090 Chemical denotes Cu http://purl.obolibrary.org/obo/CHEBI_28694
T26 5543-5546 Chemical denotes PID http://purl.obolibrary.org/obo/CHEBI_8066
T27 5577-5580 Chemical denotes PID http://purl.obolibrary.org/obo/CHEBI_8066
T28 5788-5791 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T29 5795-5798 Chemical denotes RNA http://purl.obolibrary.org/obo/CHEBI_33697
T30 5850-5858 Chemical denotes polymers http://purl.obolibrary.org/obo/CHEBI_33839
T31 5883-5889 Chemical denotes metals http://purl.obolibrary.org/obo/CHEBI_33521
T32 6300-6320 Chemical denotes polydimethylsiloxane http://purl.obolibrary.org/obo/CHEBI_31498|http://purl.obolibrary.org/obo/CHEBI_48137|http://purl.obolibrary.org/obo/CHEBI_61466|http://purl.obolibrary.org/obo/CHEBI_61468
T36 6322-6326 Chemical denotes PDMS http://purl.obolibrary.org/obo/CHEBI_31498|http://purl.obolibrary.org/obo/CHEBI_61468
T38 6737-6750 Chemical denotes cyclic olefin http://purl.obolibrary.org/obo/CHEBI_33642
T39 6744-6750 Chemical denotes olefin http://purl.obolibrary.org/obo/CHEBI_32878|http://purl.obolibrary.org/obo/CHEBI_33641
T41 6751-6760 Chemical denotes copolymer http://purl.obolibrary.org/obo/CHEBI_53310|http://purl.obolibrary.org/obo/CHEBI_60804
T43 6762-6765 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T44 7046-7049 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T45 7257-7260 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T46 7434-7437 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T47 7510-7517 Chemical denotes solvent http://purl.obolibrary.org/obo/CHEBI_46787
T48 7586-7589 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T49 7670-7673 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T50 7690-7692 Chemical denotes Au http://purl.obolibrary.org/obo/CHEBI_29287
T51 7783-7786 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T52 7823-7825 Chemical denotes Tg http://purl.obolibrary.org/obo/CHEBI_9516
T53 7843-7846 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T54 8072-8075 Chemical denotes COC http://purl.obolibrary.org/obo/CHEBI_53310
T55 8140-8147 Chemical denotes mixture http://purl.obolibrary.org/obo/CHEBI_60004
T56 8510-8517 Chemical denotes polymer http://purl.obolibrary.org/obo/CHEBI_33839|http://purl.obolibrary.org/obo/CHEBI_60027
T58 8524-8527 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T59 9125-9128 Chemical denotes HDA http://purl.obolibrary.org/obo/CHEBI_17314
T60 9227-9230 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274
T61 9310-9313 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T62 10034-10037 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274
T63 10136-10139 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274
T64 10217-10220 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T65 10274-10277 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T66 10404-10407 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T67 10411-10414 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274
T68 10603-10606 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T69 10615-10623 Chemical denotes molecule http://purl.obolibrary.org/obo/CHEBI_25367
T70 10713-10716 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T71 10742-10747 Chemical denotes bases http://purl.obolibrary.org/obo/CHEBI_22695
T72 10767-10770 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T73 10910-10913 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T74 10960-10967 Chemical denotes mixture http://purl.obolibrary.org/obo/CHEBI_60004
T75 11022-11030 Chemical denotes reagents http://purl.obolibrary.org/obo/CHEBI_33893
T76 11046-11053 Chemical denotes mixture http://purl.obolibrary.org/obo/CHEBI_60004
T77 11686-11689 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T78 11798-11801 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274
T79 11916-11922 Chemical denotes buffer http://purl.obolibrary.org/obo/CHEBI_35225
T80 12371-12374 Chemical denotes DNA http://purl.obolibrary.org/obo/CHEBI_16991
T81 12387-12390 Chemical denotes MDA http://purl.obolibrary.org/obo/CHEBI_566274

LitCovid-PD-HP

Id Subject Object Predicate Lexical cue hp_id
T2 583-588 Phenotype denotes fever http://purl.obolibrary.org/obo/HP_0001945

LitCovid-PD-GO-BP

Id Subject Object Predicate Lexical cue
T3 2644-2661 http://purl.obolibrary.org/obo/GO_0006277 denotes DNA amplification
T4 3662-3679 http://purl.obolibrary.org/obo/GO_0006277 denotes DNA amplification
T5 4588-4605 http://purl.obolibrary.org/obo/GO_0006277 denotes DNA amplification
T6 8524-8541 http://purl.obolibrary.org/obo/GO_0006277 denotes DNA amplification

LitCovid-sentences

Id Subject Object Predicate Lexical cue
T9 0-2 Sentence denotes 1.
T10 3-15 Sentence denotes Introduction
T11 16-76 Sentence denotes Diseases were and can still be a major problem in the world.
T12 77-112 Sentence denotes Examples are outbreaks of zoonoses.
T13 113-208 Sentence denotes One very recent example is the Covid-19 coronavirus outbreak in the People’s Republic of China.
T14 209-272 Sentence denotes Zoonoses are also a widespread problem in animal husbandry [1].
T15 273-399 Sentence denotes This group encompasses diseases which can be transferred between animals (usually vertebrates) and between animals and humans.
T16 400-501 Sentence denotes They are transmitted through zoonotic agents (e.g., bacteria, viruses, fungi, and parasites) [2,3,4].
T17 502-765 Sentence denotes Examples of bacterial zoonoses are the infections caused by Coxiella burnetii (Q-fever), Mycobacterium bovis (bovine tuberculosis), and by species of the Salmonella (Salmonellosis), Campylobacter (Campylobacteriosis), and Escherichia (Escherichiasis) genus [2,5].
T18 766-837 Sentence denotes These diseases are of potential risk for humans and livestock of farms.
T19 838-957 Sentence denotes Poon et al. show that early-stage detection of coronaviruses positively influence the survival chances of patients [6].
T20 958-1103 Sentence denotes An outbreak among the livestock of a farm is often disastrous to the owner of that farm, and for people living in the proximity of that farm [7].
T21 1104-1258 Sentence denotes Often, more animals of the livestock are infected and the whole livestock is exterminated out of precaution, which could lead to bankruptcy of the farmer.
T22 1259-1392 Sentence denotes Therefore, early-stage detection of this group of diseases, and other diseases as well, is often the key to save lives and livestock.
T23 1393-1562 Sentence denotes As these diseases are also encountered at remote locations and in developing countries, it is desired that such detection equipment is portable and as cheap as possible.
T24 1563-1631 Sentence denotes A lab-on-a-chip platform can be used for this early-stage detection.
T25 1632-1820 Sentence denotes In the early stage of diseases, the agent, and therefore its genetic material, is only present in low concentrations within the infected human or animal, making detection rather difficult.
T26 1821-2104 Sentence denotes One way to overcome this low concentration is to amplify the genetic material of the agent, i.e., deoxyribonucleic acid (DNA) in case of bacteria and DNA or ribonucleic acid (RNA) in case of viruses, until a certain threshold is reached and detection of the disease is made possible.
T27 2105-2466 Sentence denotes When this amplification reaction is specific to certain DNA or RNA sequences, for example, by using polymerase chain reaction (PCR) [6,8], helicase-dependent amplification (HDA) [9,10], or loop-mediated isothermal amplification (LAMP) [11], and when a fluorescent DNA or RNA binding dye is used, a simple yes-or-no answer for a specific disease can be obtained.
T28 2468-2472 Sentence denotes 1.1.
T29 2473-2489 Sentence denotes State-of-the-Art
T30 2490-2569 Sentence denotes In the past, several chip-based DNA and RNA amplification devices are reported.
T31 2570-2677 Sentence denotes It goes beyond the scope of this paper to discuss the state-of-the-art of DNA amplification chips in-depth.
T32 2678-2766 Sentence denotes There are several good review papers written on this topic [12,13,14,15,16,17,18,19,20].
T33 2767-2839 Sentence denotes Readers are referred to these for a comprehensive overview of the field.
T34 2840-3030 Sentence denotes In this paper, the state-of-the-art is divided into several discussion points, i.e., the heating method, the temperature control method, and the substrate material and fabrication technique.
T35 3031-3073 Sentence denotes These points will be discussed separately.
T36 3074-3140 Sentence denotes With respect to heat supply, different methods have been employed.
T37 3141-3253 Sentence denotes Almassian et al. give a comprehensive overview of different possible heating methods in their review paper [12].
T38 3254-3403 Sentence denotes Not all of the mentioned methods are easy to implement in low-cost and portable lab-on-a-chip devices due to their bulkiness or implementation costs.
T39 3404-3513 Sentence denotes Examples of these rather difficult methods are using heating via induction, infrared, or microwave radiation.
T40 3514-3641 Sentence denotes Others are not useful due ot their challenging temperature control, like with heating up the system using exothermic reactions.
T41 3642-3725 Sentence denotes Within the field of DNA amplification, different mechanisms of amplification exist.
T42 3726-3811 Sentence denotes Some are based on thermo cycling processes, e.g., PCR, whereas others are isothermal.
T43 3812-3899 Sentence denotes The use of an isothermal amplification technique puts less requirements on the heaters.
T44 3900-4093 Sentence denotes Isothermal processes are either truly isothermal or consisting of three different temperatures, as they have a thermal denaturation step before and a termination step after the elongation step.
T45 4094-4243 Sentence denotes The switching between these temperature steps does not have to be as fast as with thermal cycling steps in, for example, PCR amplification reactions.
T46 4244-4376 Sentence denotes The use of less temperature variations makes it easier to maintain the set temperature as there is less heating an cooling involved.
T47 4377-4501 Sentence denotes Furthermore, it eliminates the use of a continuous flow approach in systems with low thermal conductivities, e.g., polymers.
T48 4502-4576 Sentence denotes Therefore, it is easier to implement within lab-on-a-chip devices [17,21].
T49 4577-4734 Sentence denotes Isothermal DNA amplification reactions can already be performed by putting the chip on a commercially available hotplate [22,23] or Peltier elements [24,25].
T50 4735-4796 Sentence denotes However, these heating systems are bulky and power-consuming.
T51 4797-4884 Sentence denotes Therefore, they are not useful for portable equipment or operation at remote locations.
T52 4885-4950 Sentence denotes Miniaturizing heaters lowers the bulkiness and power consumption.
T53 4951-5139 Sentence denotes Miniaturized heaters can be integrated as integrated resistive heaters, e.g., as deposited thin-film metal [26,27,28,29] or as laminated Cu foil [30], or as micro-Peltier elements [31,32].
T54 5140-5319 Sentence denotes These miniaturized heaters can be implemented directly onto the microfluidic chip [28] or on a different substrate and leter incorporated onto the microfluidic chip [33,34,35,36].
T55 5320-5443 Sentence denotes The geometry of such a heater contributes significantly to the uniformity of the heat distribution within the chip [26,37].
T56 5444-5570 Sentence denotes One method to accurately control the temperature is the use of a proportional-integral-derivative (PID) controlled thermostat.
T57 5571-5703 Sentence denotes These PID controllers are coupled to the electrical heaters and use a thermocouple as feedback-loop to the controller [22,23,24,25].
T58 5704-5813 Sentence denotes There are various materials that can be used to fabricate lab-on-a-chip devices for DNA or RNA amplification.
T59 5814-5949 Sentence denotes In the past 15 years, more than ten polymers, ceramic materials, and metals have successfully been used to fabricate such devices [15].
T60 5950-6029 Sentence denotes The major property playing a role here is the biocompatibility of the material.
T61 6030-6118 Sentence denotes The surface of the microfluidic structure should not inhibit the amplification reaction.
T62 6119-6272 Sentence denotes This biocompatibility can be an intrinsic property of the material or the surface can be modified or coated to achieve this [12,13,14,15,16,17,18,19,20].
T63 6273-6403 Sentence denotes One often used material is polydimethylsiloxane (PDMS) [22,23,31,32,34,35,38], which can be processed using soft lithography [39].
T64 6404-6521 Sentence denotes However, this is a fabrication technology used in academia and is not suitable for upscaling to mass production [40].
T65 6522-6625 Sentence denotes Fabrication methods suitable for mass production are thermoforming/embossing or injection molding [41].
T66 6626-6845 Sentence denotes One of the materials which is biocompatible and suitable for both industrial scale fabrication technologies is cyclic olefin copolymer (COC) [42], which is one of the materials used in the past as well [28,36,43,44,45].
T67 6846-7026 Sentence denotes Guckenberger et al. estimates the costs of injection molding of only 50 simple microfluidic devices on $47, but this becomes cheaper when the mass production stage is reached [41].
T68 7027-7100 Sentence denotes Another benefit of COC is the possibility to shape it using micromilling.
T69 7101-7214 Sentence denotes This technique is a rapid prototyping technology and therefore very useful within proof-of-concept projects [41].
T70 7215-7303 Sentence denotes Integrating resistive metal tracks onto a COC substrate have also been done in the past.
T71 7304-7523 Sentence denotes Some papers describe the use of a surface modification step done before metal deposition in order to enhance adhesion between the COC and the metal layer, like a pretreatment with plasma [46] or an organic solvent [47].
T72 7524-7606 Sentence denotes Other papers describe the direct deposition of metal onto the COC surface [28,48].
T73 7607-7706 Sentence denotes Chung et al. specifically, fabricated an amplification chip in COC with integrated Au heaters [28].
T74 7707-7837 Sentence denotes However, their system required heating from both sides as the used grade of COC has a glass transition temperature (Tg) of 130 °C.
T75 7838-7941 Sentence denotes This COC could not withstand the required heater temperatures to have enough heat flux into the system.
T76 7942-8076 Sentence denotes They had to heat up the heater to temperatures above 130 °C, which caused cracking of the heater tracks due to deformation of the COC.
T77 8077-8181 Sentence denotes With their double-sided heating they ensured that the reaction mixture had the desired PCR temperatures.
T78 8182-8336 Sentence denotes However, double-sided heating doubles the amount of metal required, increases the amount of fabrication steps, and therefore increases the price per chip.
T79 8338-8342 Sentence denotes 1.2.
T80 8343-8361 Sentence denotes The Presented Work
T81 8362-8715 Sentence denotes The work presented at the 4th Microfluidic Handling Systems conference and which is extended in this paper aims at the development of a disposable, polymer-based DNA amplification lab-on-chip system with integrated resistive heater based on the World Health Organization (WHO) Sexually Transmitted Diseases Diagnostics Initiative (SDI) ASSURED criteria.
T82 8716-8903 Sentence denotes Devices which are ASSURED are (A) affordable, (S) sensitive, (S) specific, (U) user-friendly, (R) robust and rapid, (E) equipment-free, and (D) deliverable to those who need them [20,49].
T83 8904-8979 Sentence denotes The first step towards such a device is the development of the chip itself.
T84 8980-9079 Sentence denotes This paper focuses on the choice of substrate material, metal deposition method, and type of metal.
T85 9080-9237 Sentence denotes Although, it is mentioned above that PCR and HDA are sequence specific, the reaction chosen is the isothermal multiple displacement amplification (MDA) [50].
T86 9238-9516 Sentence denotes This reaction is more straightforward [51], as it amplifies any present DNA, and is therefore better suitable as a proof-of-principle amplification reaction to show the functioning of the integrated heater and the biocompatibility of the substrate after the fabrication process.
T87 9517-9656 Sentence denotes The use of an isothermal amplification technique also simplifies the final device and lowers its footprint, as there are no pumps required.
T88 9657-9812 Sentence denotes In this research, external analysis methods are used which do not contribute to the WHO-SDI ASSURED criteria due to their bulkiness, costs, and difficulty.
T89 9813-9939 Sentence denotes However, suggestions and comments on the integration of low-cost detection methods, which are ASSURED, are given in Section 5.
T90 9941-9945 Sentence denotes 1.3.
T91 9946-9981 Sentence denotes Multiple Displacement Amplification
T92 9982-10135 Sentence denotes The proof-of-principle amplification of choice is a MDA reaction, which is a non-specific isothermal method of amplification performed around 30 °C [50].
T93 10136-10226 Sentence denotes MDA is a method of whole genome amplification (WGA), as it amplifies all present DNA [52].
T94 10227-10297 Sentence denotes It is commonly used when the initial amount of DNA sample is very low.
T95 10298-10433 Sentence denotes After the WGA is performed, a sequence specific amplification can be done since the quality the amplified DNA by MDA is very high [53].
T96 10434-10570 Sentence denotes The amplification reaction is illustrated below in Figure 1 (the contour of the amplified sequence is highlighted in black for clarity).
T97 10571-10787 Sentence denotes Starting with a double stranded DNA (dsDNA) molecule, a denaturation step at 95 °C is required, giving the random hexamer-primers and the ϕ29 DNA polymerase access to the bases of single stranded DNA (ssDNA) strands.
T98 10788-10857 Sentence denotes The hexamers anneal themself to aleatory parts of the ssDNA sequence.
T99 10858-10926 Sentence denotes These hexamers work as initiation sites for the ϕ29 DNA polymerases.
T100 10927-11041 Sentence denotes After denaturation at 95 °C, the mixture is cooled down to ice temperature and the rest of the reagents are added.
T101 11042-11242 Sentence denotes The mixture is heated up to ~30 °C so the polymerase starts to complete the complementary ssDNA sequence, creating again a dsDNA strand, eventually it encounters a hexamer from another annealing site.
T102 11243-11380 Sentence denotes Once this happens the polymerase will lift up that hexamer and starts to separate the amplified sequence formed from that annealing site.
T103 11381-11478 Sentence denotes As the polymerase displaces the formed strand ahead of it, it continues to complete the sequence.
T104 11479-11698 Sentence denotes The displaced strand becomes a new ssDNA strand and therefore, it gives new sites for more primers to attach and initiation sites for the polymerase, continuing the amplification, and thus creating a web of DNA strands.
T105 11699-11785 Sentence denotes Finally, the inactivation of the polymerase is done by heating up the system to 65 °C.
T106 11786-12030 Sentence denotes Even though MDA is considered an isothermal process, prior to the reaction and to the addition of most reactants, the dsDNA and a buffer are heated up to 95 °C to denature the dsDNA to ssDNA and to give hexamers the initial access to the ssDNA.
T107 12031-12111 Sentence denotes After the amplification reaction, the polymerase has to be inactivated at 65 °C.
T108 12112-12255 Sentence denotes However, this does not require fast temperature changes, as would be the case with, for example, the temperature cycling in PCR amplifications.
T109 12256-12472 Sentence denotes This, together with the robustness of the amplification (it is a self-limiting reaction that amplifies all present DNA [50]) makes MDA perfectly suitable as proof-of-principle amplification reaction for such devices.

2_test

Id Subject Object Predicate Lexical cue
32106462-30140679-69893262 269-270 30140679 denotes 1
32106462-25353010-69893263 494-495 25353010 denotes 2
32106462-25958184-69893264 496-497 25958184 denotes 3
32106462-28754024-69893265 498-499 28754024 denotes 4
32106462-25353010-69893266 760-761 25353010 denotes 2
32106462-22519858-69893267 762-763 22519858 denotes 5
32106462-14522060-69893268 954-955 14522060 denotes 6
32106462-22711640-69893269 1100-1101 22711640 denotes 7
32106462-14522060-69893270 2238-2239 14522060 denotes 6
32106462-2999980-69893271 2240-2241 2999980 denotes 8
32106462-15247927-69893272 2284-2285 15247927 denotes 9
32106462-21157218-69893273 2341-2343 21157218 denotes 11
32106462-24030680-69893274 2738-2740 24030680 denotes 12
32106462-19327449-69893275 2747-2749 19327449 denotes 15
32106462-21387067-69893276 2753-2755 21387067 denotes 17
32106462-17553097-69893277 2756-2758 17553097 denotes 18
32106462-22704369-69893278 2762-2764 22704369 denotes 20
32106462-24030680-69893279 3249-3251 24030680 denotes 12
32106462-21387067-69893280 4569-4571 21387067 denotes 17
32106462-22592150-69893281 4572-4574 22592150 denotes 21
32106462-21479543-69893282 4699-4701 21479543 denotes 22
32106462-23610705-69893283 4702-4704 23610705 denotes 23
32106462-21267083-69893284 4727-4729 21267083 denotes 24
32106462-22038328-69893285 4730-4732 22038328 denotes 25
32106462-15269812-69893286 5306-5308 15269812 denotes 33
32106462-18975094-69893287 5309-5311 18975094 denotes 34
32106462-21479543-69893288 5690-5692 21479543 denotes 22
32106462-23610705-69893289 5693-5695 23610705 denotes 23
32106462-21267083-69893290 5696-5698 21267083 denotes 24
32106462-22038328-69893291 5699-5701 22038328 denotes 25
32106462-19327449-69893292 5945-5947 19327449 denotes 15
32106462-24030680-69893293 6244-6246 24030680 denotes 12
32106462-19327449-69893294 6253-6255 19327449 denotes 15
32106462-21387067-69893295 6259-6261 21387067 denotes 17
32106462-17553097-69893296 6262-6264 17553097 denotes 18
32106462-22704369-69893297 6268-6270 22704369 denotes 20
32106462-21479543-69893298 6329-6331 21479543 denotes 22
32106462-23610705-69893299 6332-6334 23610705 denotes 23
32106462-18975094-69893300 6341-6343 18975094 denotes 34
32106462-20218572-69893301 6347-6349 20218572 denotes 38
32106462-28281349-69893302 6517-6519 28281349 denotes 40
32106462-25906246-69893303 6621-6623 25906246 denotes 41
32106462-20066496-69893304 6835-6837 20066496 denotes 43
32106462-31277382-69893305 6841-6843 31277382 denotes 45
32106462-25906246-69893306 7022-7024 25906246 denotes 41
32106462-25906246-69893307 7210-7212 25906246 denotes 41
32106462-24957952-69893308 7602-7604 24957952 denotes 48
32106462-22704369-69893309 8896-8898 22704369 denotes 20
32106462-16786504-69893310 9233-9235 16786504 denotes 50
32106462-16786504-69893311 10131-10133 16786504 denotes 50
32106462-23298390-69893312 10222-10224 23298390 denotes 52
32106462-16786504-69893313 12376-12378 16786504 denotes 50