PMC:7461420 / 31273-31284
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T289","span":{"begin":6,"end":9},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"uses. 109\nF"}