rdfs:comment reagents are chemical or biological in nature and, participate in some chemical interaction or reaction during, chemical reaction/interaction during the technique
http://purl.obolibrary.org/obo/IAO_0000116 chemical or biological in nature and necessarily, participate in some chemical interaction or reaction, chemical reactions/interactions. Note that there are
http://purl.obolibrary.org/obo/IAO_0000115 A biological or chemical entity that bears a, chemical reaction that facilitates the generation