PMC:7291971 / 77252-77254 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T1533","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"},{"id":"T72503","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"}],"text":"2H"}