PMC:7214329 / 7323-7334
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T54","span":{"begin":0,"end":11},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Air samples"}