lymphocyte

Definition / meaning of lymphocyte

A type of immune cell that is made in the bone marrow and is found in the blood and in lymph tissue. The two main types of lymphocytes are B lymphocytes and T lymphocytes. B lymphocytes make antibodies, and T lymphocytes help kill tumor cells and help control immune responses. A lymphocyte is a type of white blood cell.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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