granulocyte quantity basophil morphology trait basophil quantity EFO:0007992 VT:0002607 EFO:0007995 EFO:0005090 Trait.ontology CMO:0000034 CMO:0000368 basophil cell number basophil number basophil count The proportion or number of granular leukocytes that are characterized by pale-staining, lobate nucleus and cytoplasm, contain dark-staining granules of varying size, and are stained by basic dyes.