Eosinophil

a polymorphonuclear leukocyte characterized by prominent cytoplasmic granules that are bright yellow-red or orange when treated with Wright stain

Description
The nuclei of eosinophils are usually larger than those of neutrophils and characteristically have two lobes; these leukocytes are motile phagocytes with distinctive antiparasitic functions. An increased number of eosinophils in the peripheral blood is a common sign of allergy or parasitic infections. Syn oxyphilic leukocyte, oxyphil (2), eosinophile