PMC:6988269 / 19641-19767 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T205","span":{"begin":19,"end":23},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"In four individual test reactions, weak initial reactivity was seen but they were negative upon retesting with the same assay."}

{"project":"LitCovid-sentences","denotations":[{"id":"T188","span":{"begin":0,"end":126},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In four individual test reactions, weak initial reactivity was seen but they were negative upon retesting with the same assay."}