has role molecular entity reagent molecular label role molecular label A molecular reagent intended to associate with some molecular target to serve as a proxy for the presence, abundance, or location of this target in a detection of molecular label assay OBI developer call, 3-12-12 Group: OBI JZ (3-30-20): discussed on the OBI call. Since the REO was never actually registered, we decided to adopt the term into OBI and replaced OBI:0002744 by newly assigned ID: OBI:0002744. https://github.com/obi-ontology/obi/issues/1135 molecular label molecular tracer metadata complete