PMC:7161517 / 638-664 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T22","span":{"begin":17,"end":23},"obj":"CHEBI:48561;CHEBI:48561"},{"id":"T23807","span":{"begin":17,"end":23},"obj":"CHEBI:48561;CHEBI:48561"}],"text":"the use of these agents ma"}