PMC:7156903 / 696-786 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T5","span":{"begin":1,"end":6},"obj":"http://purl.obolibrary.org/obo/NCBITaxon_10239"}],"text":" virus isolation or viral nucleic acid detection; however, false negatives associated with"}

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T1","span":{"begin":26,"end":38},"obj":"Chemical"},{"id":"T2","span":{"begin":34,"end":38},"obj":"Chemical"}],"attributes":[{"id":"A1","pred":"chebi_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/CHEBI_33696"},{"id":"A2","pred":"chebi_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/CHEBI_37527"}],"text":" virus isolation or viral nucleic acid detection; however, false negatives associated with"}