Leucocyte – Trusted & Best

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

Leucocytes are generally classified by their cell lineage into or lymphoid cells and further divided based on the presence of granules in their cytoplasm: Granulocytes : Contain visible granules and include:

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

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

The primary role of leucocytes is to protect the body against infectious diseases and foreign entities. They achieve this through several critical processes: : Key players in the adaptive immune system,

: They move from the bloodstream into tissues via the lymphatic vasculature using chemokine-directed "amoeboid movement".

: Primarily involved in battling parasitic infections and allergic responses. Agranulocytes : Lack visible granules and include: The

: The most numerous, acting as first responders to infection.