PMC:7291971 / 38880-38882 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T799","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"},{"id":"T26849","span":{"begin":0,"end":2},"obj":"CHEBI:53233;CHEBI:53233"}],"text":"2H"}