Lymphocytes are a type of white blood cell produced in bone marrow that play a crucial role in your immune system. There are several types—called T cells, B cells, and natural killer (NK) cells ...

Lymphocytes are a type of white blood cell. Learn more about lymphocytes and what a normal lymphocyte count is.

Possible signs of leukemia include fevers, fatigue, bleeding, and bruising.There are many types of leukemia, and they may have similar signs and symptoms. Acute types grow and spread quickly, while ...

Learn more about lymphocytes, a type of white blood cell. We look at their function, normal levels, and what happens if levels are too high or too low.

Lymphocytes are white blood cells. Your lymphocyte counts can help your doctor diagnose an infection or other condition.

Lymphoproliferative disorders are a group of diseases that cause an uncontrolled production of lymphocytes, a type of white blood cell. Examples include non-Hodgkin's lymphoma and certain ...

Lymphocytes work the front lines to identify and destroy foreign invaders. They are the main type of cell found in lymph, the fluid that circulates through the lymphatic system. There are three ...

If your doctor tells you that you have B-cell lymphoma, it means you have a cancer that forms in white blood cells called lymphocytes. Find out what causes it, the symptoms, and the reasons you ...

White blood cells are cells that help the body fight infection. There are a number of different types of white blood cell which each have different roles.

Lymphocytosis is a higher-than-usual count of a type of white blood cell called lymphocytes. Smudge cells are damaged white blood cells that suggest that your blood cells are more fragile. Learn more.