granulocyte physiology trait eosinophil physiology trait eosinophilic leukocyte physiology trait polymorphonuclear leucocyte physiology trait Trait.ontology Any measurable or observable characteristic related to the function of or processes in the immature or mature forms of a granular leukocyte with a nucleus that usually has two lobes connected by one or more slender threads of chromatin, and cytoplasm containing coarse, round granules that are uniform in size and which can be stained by the dye eosin; involved in clearance of parasitic infections and in allergic reactions. eosinocyte physiology trait VT:0002465 polymorphonuclear leukocyte physiology trait EFO:0803540 eosinophilic leucocyte physiology trait