PMC:7784787 / 8290-8324
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T70","span":{"begin":0,"end":34},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Photographs of the test materials."}