PMC:7650537 / 511-671 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T5","span":{"begin":2,"end":135},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":". Sensitivities were calculated with convalescent sera from 26 PCR-confirmed cases, of which 76.9% had neutralizing antibodies (\u003e1:10). Stored sera collected du"}