PMC:7796329 / 35127-35133
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T297","span":{"begin":0,"end":6},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2.4.2."}