PMC:7784824 / 346-504 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T9","span":{"begin":39,"end":121},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"d struggles to detect low viral loads. Serology could help to diagnose suspected cases which lack molecular confirmation. Two case reports are presented as il"}