A lymphocyte is a type of white blood cell that is part of the immune system
In the immune system of jawed vertebrates, a lymphocyte is a type of white blood cell. Natural killer cells, 4)T cells, and B cells are all lymphocytes. They are the most common form of lymphocyte, thus the name "lymphocyte."
Lymphocytes collaborate to protect the body from outside invaders such as bacteria, viruses, and cancer cells that could compromise its health.
