PMC:7589389 / 74386-74415 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T739","span":{"begin":0,"end":29},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"SIZE 0.000 −0.000 −0.000 *"}