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 …

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 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 …

CLL is a lymphocytic leukemia. Lymphocytic leukemias (also known as lymphoid or lymphoblastic leukemias) start in the bone marrow cells that would normally become white blood cells called …

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 …

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. …

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 …

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 meaning of LYMPHOCYTE is any of the colorless weakly motile cells originating from stem cells and differentiating in lymphoid tissue (as of the thymus or bone marrow) that are the typical cellular …