Leukocyte

Definition

Leukocytes, also known as white blood cells, are cells of the immune system involved in defending the body against both infectious disease and foreign materials. They are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells.

Related terms

Hematopoiesis:

The process by which all blood cells, including leukocytes, are created in the bone marrow.

Phagocytosis:

A process by which certain leukocytes engulf and digest microscopic particles or pathogens.

Lymphocyte: A type of leukocyte that is a key part of the immune system, responsible for producing antibodies and other substances to fight infection