PMC:7143846 / 5616-5640 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T36","span":{"begin":0,"end":2},"obj":"Sentence"},{"id":"T37","span":{"begin":3,"end":24},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2. Materials and Methods"}