PMC:7291971 / 49405-49407 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T1001","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"},{"id":"T81968","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"}],"text":"2H"}