PMC:7376974 / 21138-21177
Annnotations
LitCovid-PD-CHEBI
{"project":"LitCovid-PD-CHEBI","denotations":[{"id":"T221","span":{"begin":6,"end":14},"obj":"Chemical"}],"attributes":[{"id":"A221","pred":"chebi_id","subj":"T221","obj":"http://purl.obolibrary.org/obo/CHEBI_33839"}],"text":"ionic polymers and the negatively charg"}