eozinofiller

Eozinofiller, also known as eosinophils, are a type of white blood cell that plays a role in the immune system. They are characterized by the presence of large, eosinophilic granules in their cytoplasm, which stain a bright pink or red with the stain eosin. Eosinophils are produced in the bone marrow and circulate in the bloodstream before migrating to various tissues, particularly those that are exposed to the external environment, such as the respiratory tract, gastrointestinal tract, and skin.

The primary functions of eosinophils are related to defense against parasitic infections and modulation of allergic inflammatory responses. They are particularly effective against multicellular parasites like helminths (worms) by releasing toxic proteins and enzymes from their granules. In allergic reactions, eosinophils can contribute to inflammation by releasing mediators that attract other immune cells and cause tissue damage. They are often found in increased numbers in individuals with allergies, asthma, and certain skin conditions.

The count of eosinophils in the blood, known as the absolute eosinophil count, is a common diagnostic indicator. An elevated eosinophil count, or eosinophilia, can suggest the presence of parasitic infections, allergic diseases, or other inflammatory conditions. Conversely, a low eosinophil count is generally not clinically significant. Eosinophils are a vital component of the immune system, contributing to both defense and the complex processes of inflammation.