T cell (redirected from T-lymphocyte)

T cell

n.

A principal type of white blood cell that completes maturation in the thymus and that has various roles in the immune system, including the identification of specific foreign antigens in the body and the activation and deactivation of other immune cells. Also called T lymphocyte.

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T cell

A type of white blood cell produced in the thymus gland that regulates the immune system's response to diseased or malignant cells. It is possible that a subcategory of T cells known as CD4 cells plays a role in Ménière's disease.

Mentioned in: Kawasaki Syndrome, Ménière's Disease

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T cell,

a small circulating lymphocyte produced in the bone marrow that matures in the thymus. T cells primarily mediate cellular immune responses such as graft rejection and delayed hypersensitivity. One kind of T cell, the helper T cell, affects the production of antibodies by B cells. A suppressor T cell suppresses B cell activity. Compare B cell. See also antibody, immune response. Also called T lymphocyte.

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T cell,

n a small, circulating lymphocyte produced in the bone marrow that matures in the thymus. T cells primarily mediate cellular immune responses, such as graft rejection and delayed hypersensitivity.

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T cell

see T lymphocyte.

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T c. receptor

antigen specific heterodimeric proteins, either αβ or γδ, present on the surface of T lymphocytes, the specificity of which is generated by somatic mutation and somatic recombination of a relatively small number of genes and is similar to that responsible for the generation of antibody diversity.

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Patient discussion about T-lymphocyte.

Q. How are cancer cells similar to normal cells, and how are they different? I know that a similarity would be cells regenerate, and a difference would be cancer cells grow uncontrollably. Is there anything else?

A. I learned a lot of new things from the answers. Thanks.

Q. is there such thing bone cancer? if so what does it cause? i am asking because bone isn't a cell platform and cancer is cells that are multiplying by the dozen !!! is so also in bone , if there is such thing ...

A. hmmm...here is the picture again:
http://images.google.co.il/imgres?imgurl=http://www.siumed.edu/~dking2/ssb/images/NM036b.jpg&imgrefurl=http://www.siumed.edu/~dking2/ssb/NM036b.htm&h=471&w=600&sz=78&hl=iw&start=3&usg=__41ScizyAIOw9o5Dy7ddUqBu9Nsw=&tbnid=oqT7BPisw6NjrM:&tbnh=106&tbnw=135&prev=/images%3Fq%3Dosteocyte%26gbv%3D2%26hl%3Diw%26sa%3DX

Q. What tests can the doctors do to see if I have cancer cells still in me? Am using my friend user name. I had a mastectomy in October of the 3cms lump. They also removed lymph nodes from armpit. They found that 2 nodes were slightly infected and 2 blood vessels leading away were the same. My oncologist says I should start chemo for 5 months followed by 5 wks of radiotherapy. I am awaiting the results from bone, heart, lungs and blood tests. What tests can the doctors do to see if I have cancer cells still in me?

A. You need to have your own self examination, which you can get guidance from doctor and all the tests which you already had and the tests which you are awaiting. Like you may have clinical examination, mammograms- which you already had, breast biopsy, ultrasonography, post biopsy pathology test, HER-2 gene test to find the speed of your tumor growth. Tests to check cancer spread – like lymph, bone, liver and lungs whose results you are waiting for.