PMC:7405836 / 7179-7325 JSONTXT

{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T15","span":{"begin":103,"end":105},"obj":"Chemical"}],"attributes":[{"id":"A15","pred":"chebi_id","subj":"T15","obj":"http://purl.obolibrary.org/obo/CHEBI_74807"}],"text":"of the receptor-binding domain (RBD), and another six substitutions are in the underpinning subdomain (SD) (16). Phylogenetic analyses have reveal"}