Eosinophils- Definition, Structure, Immunity and Functions


Eosinophils are a type of white blood cells that are involved in various immune responses, especially against parasitic infections. They are also associated with allergic reactions, asthma, and some inflammatory diseases. Eosinophils have distinctive granules in their cytoplasm that contain various proteins and mediators that can modulate inflammation and tissue damage. Eosinophils can also act as antigen-presenting cells and secrete cytokines that influence the polarization and activation of T cells. Eosinophils are derived from the bone marrow and circulate in the blood for a short time before migrating to different tissues, where they can differentiate into tissue-specific subtypes. Eosinophils are regulated by various cytokines, chemokines, and receptors that control their maturation, recruitment, and activation. In this article, we will explore the definition, structure, immunity, and functions of eosinophils in more detail.