http://purl.obolibrary.org/obo/IAO_0000115 A role inhering in a biological or chemical, components that participate) in a chemical reaction that @en
rdfs:comment chemical or biological in nature and necessarily, some chemical interaction or reaction during their, contrast, instruments do not participate in a chemical
http://purl.obolibrary.org/obo/IAO_0000232 bearers of the role to be chemical entities ("a role, chemical reaction to detect, measure, or produce other