Eosinophils are a type of white blood cell, specifically a granulocyte, that play a crucial role in the immune system, particularly in fighting off parasitic infections and mediating allergic reactions. These cells are characterized by their large granules that stain red-orange with eosin dye and are produced in the bone marrow. Eosinophils contribute to the body's defense mechanisms through the release of cytotoxic granules and inflammatory mediators.
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