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T cell
(redirected from T-cell)

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T cell

With the B cell, one of the two main types of white blood cell, essential parts of the immune system. T cells originate in the bone marrow, mature in the thymus, and travel in the blood to other lymphoid tissues, such as the spleen, tonsils, and lymph nodes. Through receptor molecules on their surfaces, T cells directly attack invaders (antigens) by binding to them and helping remove them from the body. Because the body contains millions of T and B cells, many of which carry unique receptors, it can respond to virtually any antigen. See also antibody, immunology.


T cell [′tē ‚sel]
(immunology)
One of a heterogeneous population of thymus-derived lymphocytes which participates in the immune responses. Also known as T lymphocyte.


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Which of the following statements concerning the 4 study cases of nodular sclerosis Hodgkin lymphoma expressing T-cell antigens is true?
Those at risk include: HIV infected patients with CD4 counts less than 200, those taking high dose steroids, patients who have had bone marrow, stem cell or organ transplants, children with severe combined immunodeficiency, patients with specific T-cell deficiencies, Occasionally patients who are receiving anticancer chemotherapy will have depressed Tcell function - you are advised to check with your GP or consultant about this.
Since TRAP activity has been observed in some cases of CLL, MLLP, Sezary syndrome/mycosis fungoides (SS/MF), adult T-cell lymphoma leukemia (ATLL), Waldenstrom's macroglobulinemia (WM), PLL, and some cases of non-lymphoid leukemia, clinicopathologic correlation is invaluable.
 
 
 
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