Leucocyte

: Certain leucocytes, like neutrophils and macrophages, ingest and destroy harmful germs and cellular debris.

The primary role of leucocytes is to protect the body against infectious diseases and foreign entities. They achieve this through several critical processes: leucocyte

: Primarily involved in battling parasitic infections and allergic responses. : They move from the bloodstream into tissues

: They move from the bloodstream into tissues via the lymphatic vasculature using chemokine-directed "amoeboid movement". Unlike red blood cells, all leucocytes have nuclei,

(also spelled leukocytes), commonly known as white blood cells (WBCs) , are the mobile units of the body's defensive system. They are produced in the bone marrow and lymph tissue and are distributed throughout the blood and lymphatic systems. Unlike red blood cells, all leucocytes have nuclei, which is their primary distinguishing feature. Classification of Leucocytes

: Specific cell adhesion molecules (CAMs) allow leucocytes to stick to vascular endothelial cells, a process essential for reaching the site of an injury or infection.

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