PMC:7558333 / 27154-27181
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T228","span":{"begin":0,"end":27},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Negative PCR 1 * 176 177"}