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  1. Lymphocytes: Function, Definition, Levels & Ranges

    Lymphocytes are a type of white blood cell. They help your body’s immune system fight cancer and foreign viruses and bacteria. Your lymphocyte count can be taken during a normal blood test at your …

  2. What Lymphocytes Do and What High and Low Levels Mean

    Dec 8, 2025 · There are several types—called T cells, B cells, and natural killer (NK) cells—that support the immune system in different ways. The main function of lymphocytes is to recognize and …

  3. Lymphocytes: What's a Normal Count? - WebMD

    Sep 7, 2025 · As a key part of your immune system, abnormal amounts of lymphocytes can impact your health. Learn about lymphocyte function, how to test for them, and tips on how to keep your …

  4. Lymphocytes: Definition, Counts, and More - Healthline

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

  5. Lymphocyte - Wikipedia

    Lymphocyte ... A lymphocyte is a type of white blood cell (leukocyte) in the immune system of most vertebrates. [1]

  6. Lymphocyte | Description, Types, & Functions | Britannica

    Apr 3, 2026 · A lymphocyte is a type of white blood cell that is of fundamental importance in the immune system, particularly for its role in determining the specificity of the immune response to …

  7. Lymphocytes in Blood Tests What Do They Indicate

    Apr 13, 2026 · Lymphocyte levels reflect immune system health. Our blood tests help detect infections, immune disorders, and inflammatory conditions early.

  8. Lymphocytes: Function, Types, and Counts - Health

    Dec 6, 2025 · There are three main types of lymphocytes: B cells, T cells, and natural killer (NK) cells. Each has a unique role in defending your body against infections and diseases.

  9. Lymphocyte - National Human Genome Research Institute

    2 days ago · There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins. The T cells destroy the …

  10. Lymphocytes: Definition, Function & Causes of High and Low Count

    Sep 10, 2024 · There are three main types of lymphocytes: B cells: Produce antibodies to fight off infections. T cells: Directly attack infected or abnormal cells. Natural killer (NK) cells: Destroy …