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  1. Lymphocytes: Function, Definition, Levels & Ranges

    Lymphocytes 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 …

  2. Lymphocytes: What Normal, Low & High Levels Mean

    Jan 5, 2022 · Lymphocytes are a type of white blood cell produced in the bone marrow. Learn what blood tests can show about lymphocyte levels, what's considered a normal range for …

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

    Sep 19, 2023 · About 20%-40% of your white blood cells are lymphocytes. Your lymphocytes act like your body's army. They help your body's immune system fight cancer, viruses, and …

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

    Apr 23, 2025 · A normal lymphocyte count in adults is between 1,000 cells/mL and 4,800 cells/mL. Having too many lymphocytes (lymphocytosis) may be a sign of an infection, thyroid …

  5. What level of lymphocytes is considered dangerous?

    Oct 11, 2024 · The key factor in determining whether abnormal lymphocyte levels are due to cancer or something else is seeing if they are monoclonal or multi-clonal. Monoclonal means …

  6. Lymphocyte - Wikipedia

    They are the main type of cell found in lymph, which prompted the name "lymphocyte" (with cyte meaning cell). [4] . Lymphocytes make up between 18% and 42% of circulating white blood …

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

    Sep 29, 2018 · Lymphocytes are white blood cells. Your lymphocyte counts can help your doctor diagnose an infection or other condition.

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

    May 17, 2023 · Lymphocytes are a type of white blood cell that play a crucial role in the immune system. Learn about lymphocyte types, functions, and counts.

  9. 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 …

  10. Lymphocyte | Description & Functions | Britannica

    Jun 25, 2025 · Lymphocyte, type of white blood cell that is of fundamental importance in the immune system. Lymphocytes determine the specificity of the immune response to infectious …