PMC:6988269 / 64-118 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T2","span":{"begin":5,"end":13},"obj":"Sentence"},{"id":"T3","span":{"begin":14,"end":24},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"PCR\n\nAbstract\nBackground\nThe ongoing outbreak of the r"}