PMC:7143804 / 50794-50823
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T412","span":{"begin":0,"end":29},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"PCR polymerase chain reaction"}