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 …

Oct 24, 2025 · A small number of people with chronic lymphocytic leukemia may develop an immune system reaction that causes the disease-fighting cells of the immune system to mistakenly attack the …

LPDs encompass a wide array of disorders involving B-cell (e.g., chronic lymphocytic leukemia) and T-cell (e.g., Sezary syndrome) abnormalities, each presenting distinct challenges in diagnosis and …

Oct 11, 2024 · What’s considered a normal lymphocyte range? A normal white blood cell count is between 4,000 and 10,000 per microliter. About 30% to 40% of those — or 1,200 to 4,000 — will be …

Mar 31, 2025 · There are two categories of lymphocytes, known as B lymphocytes and T lymphocytes. People commonly refer to these as B cells and T cells. Both types originate from stem cells in the …

In some cases, lymphocytosis is one of the first signs of certain blood cancers, including chronic lymphocytic leukemia (CLL), the most common type of leukemia in adults. Further tests are usually …

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 …

The most common of these is Chronic Lymphocytic Leukemia (CLL), which involves the uncontrolled growth of a specific type of lymphocyte. Further testing, such as flow cytometry, is used to determine …

Dec 5, 2025 · Where are lymphocytes found in the body? Lymphocytes are found in the circulation and concentrated in central lymphoid organs and tissues, such as the spleen, tonsils, and lymph nodes. …

Nov 19, 2025 · They help the body fight cancer, foreign viruses, infections, and abnormal cells. The lymphocyte percentage represents the proportion of your total white blood cells that are lymphocytes, …