PMC:7405836 / 7141-7288 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T15","span":{"begin":141,"end":143},"obj":"Chemical"}],"attributes":[{"id":"A15","pred":"chebi_id","subj":"T15","obj":"http://purl.obolibrary.org/obo/CHEBI_74807"}],"text":"these substitutions are in the region of the receptor-binding domain (RBD), and another six substitutions are in the underpinning subdomain (SD) (1"}