PMC:7291971 / 37580-37582 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T772","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"},{"id":"T40445","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"}],"text":"2H"}