PMC:6988269 / 3271-3416
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T29","span":{"begin":28,"end":33},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"}],"text":"In all of these situations, virus isolates were available as the primary substrate for establishing and controlling assays and assay performance."}
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T27","span":{"begin":0,"end":145},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In all of these situations, virus isolates were available as the primary substrate for establishing and controlling assays and assay performance."}