PMC:7796291 / 10556-10768 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T94","span":{"begin":0,"end":212},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"FE-SEM images of filter samples were observed by Supra 55 VP (Zeiss, Oberkochen, Germany), with prior coating with Pt at 20 mA for 120 s, using a 108auto sputter coater (Cressington Scientific Inc., Watford, UK)."}