PMC:7103696 / 105-120
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T6","span":{"begin":6,"end":14},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"tract\nABSTRACT\n"}