PMC:7781431 / 28021-28135 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T281","span":{"begin":0,"end":114},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"There is an inverse correlation between the level of PD1 and the level of pathogenicity of various virus isolates."}