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A lymphocyte is a type of white blood cell. White blood cells are part of your immune system and help your body fight off diseases, including infections and cancer. There are two main types of lymphocytes â B cells and T cells.
Lymphocytes are produced by precursor cells in the bone marrow. They are found traveling in the blood stream, at sites of infection in large numbers, and in the lymph nodes which are located in the groin area, armpit area, and tonsils. There are also lymphocytes in the appendix and spleen.ymphocytes are white blood cells. There are different types of white blood cells. They are monocytes, lymphocytes and granulocytes. Lymphocytes are smaller than granulocytes and have a round nucleus. They are made in the lymph nodes and spleen.