Leucocyte [RECOMMENDED]

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

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

: They move from the bloodstream into tissues via the lymphatic vasculature using chemokine-directed "amoeboid movement". : The most numerous, acting as first responders to infection

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

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

: 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.