PMC:7054964 / 8795-8880 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T129","span":{"begin":82,"end":84},"obj":"http://purl.obolibrary.org/obo/CLO_0050507"}],"text":"Pharyngeal samples were PCR positive on days 14 and 17 and became negative on day 22."}

{"project":"LitCovid-sentences","denotations":[{"id":"T66","span":{"begin":0,"end":85},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Pharyngeal samples were PCR positive on days 14 and 17 and became negative on day 22."}