Lymphocytes

Lymphocytes is a general name for three types of white blood cells: T cells, B cells and NK cells. Lymphocytes have been given their name because they are the main cells of the lymphatic system, which consists of capillaries and lymph nodes that transport plasma-like fluid and cells from body tissues into the bloodstream as part of the immune system. Most of these cells’ functions apply to the lymphatic system. The majority of lymphocytes, namely T-cells and B-cells, are part of the acquired immune system and have the ability to recognize and "remember" specific infections. NK (natural killer) cells are part of the innate immune system and attack foreign bodies instantly without distinguishing between them.