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Leucocyte

: Primarily involved in battling parasitic infections and allergic responses.

: Large cells that migrate into tissues to become macrophages, which engulf debris and pathogens. leucocyte

: They move from the bloodstream into tissues via the lymphatic vasculature using chemokine-directed "amoeboid movement". : Primarily involved in battling parasitic infections and

: Key players in the adaptive immune system, further divided into T cells (cell-mediated immunity) and B cells (antibody production). Function and Mechanism leucocyte

: Release histamine and other chemicals during inflammatory reactions. Agranulocytes : Lack visible granules and include:

Lawrence S. Wittner (https://www.lawrenceswittner.com/ ) is Professor of History Emeritus at SUNY/Albany and the author of Confronting the Bomb (Stanford University Press).