is a cell . WBC Polymorphonuclear Leukocytes

            Eosinophils are important in phagocytosis as well as in allergic and inflammatory reactions.
            can kill helminths by ADCC .

            A polymorphonuclear leukocyte with large eosinophilic (i.e. red) cytoplasmic granules.

            Eosinophil function is incompletely understood. They are prominent at sites of allergic reactions, and with
            parasitic ( helminths ) infections. Eosinophil secretory products inactivate many of the chemical mediators
            of inflammation. This phenomenon is most obvious with mast cell-derived mediators. Mast cells produce a
            chemotactic factor for eosinophils. Secretory products of eosinophils:
              major basic protein (MBP)
            the substance that can kill parasitic larvae (helminths), inactivates heparine .

Eosinophil Links:
HON Allergy Glossary Eosinophil
Blood cells and the CBC

MS Glossary
All About Multiple Sclerosis