PMC:7386785 / 26074-26343 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T54398","span":{"begin":38,"end":39},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"},{"id":"T33208","span":{"begin":119,"end":123},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"We anticipated that studies would use a range of reference standards. Although RT‐PCR is considered the best available test, due to rapidly evolving knowledge about the target conditions, multiple reference standards on their own as well as in combination have emerged."}

{"project":"LitCovid-sentences","denotations":[{"id":"T290","span":{"begin":0,"end":69},"obj":"Sentence"},{"id":"T291","span":{"begin":70,"end":269},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We anticipated that studies would use a range of reference standards. Although RT‐PCR is considered the best available test, due to rapidly evolving knowledge about the target conditions, multiple reference standards on their own as well as in combination have emerged."}