Children's Cancer Foundation

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Children's Cancer Foundation  About Childhood Cancer  Diagnosis and Treatment Glossary  Eosinophil


A variety of white blood cell distinguished by the presence in its cytoplasm of coarse granules that stain orange-red with Romanowsky stains.  The function of the eosinophil is poorly understood, but it is capable of ingesting foreign particles, is present in large numbers in lining or covering surfaces within the body, and is involved in allergic responses.