abnormal myeloblast morphology/development abnormal granulocyte morphology abnormal eosinophil morphology abnormal polymorphonuclear leucocyte morphology abnormal polymorphonuclear leukocyte morphology abnormal eosinophilic leucocyte morphology any structural anomaly of 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 and is involved in clearance of parasitic infections and in allergic reactions MP:0005061 eosinophil structural abnormalities abnormal eosinophilic leukocyte morphology abnormal eosinocyte morphology MPheno.ontology