T lymphocyte

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Related to T lymphocyte: B lymphocyte, Cytotoxic T lymphocyte

T lym·pho·cyte

a lymphocyte formed in the bone marrow from which it migrates to the thymic cortex to become an immunologically competent cell; T lymphocytes have long lifespans (months to years) and are responsible for cell-mediated immunity; T lymphocytes form rosettes with sheep erythrocytes and differentiate and divide in the presence of transforming agents (mitogens); T lymphocytes have characteristic T cell receptor-CD3 complexes as surface markers and may be further categorized by function, such as helper and cytotoxic.
See also: B lymphocyte.

Synonym(s): T cell

Farlex Partner Medical Dictionary © Farlex 2012

T lymphocyte

See T cell.

T lym·pho·cyte

(lim'fŏ-sīt)

A thymocyte-derived lymphocyte of immunologic importance that is responsible for cell-mediated immunity. These cells have the characteristic T3 surface marker and may be further divided into subsets according to function, such as helper, suppressor, and cytotoxic.
See also: B lymphocyte
Synonym(s): T cell.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

T lym·pho·cyte

(lim'fŏ-sīt)

Lymphocyte formed in bone marrow from which it migrates to thymic cortex to become an immunologically competent cell.

Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about T lymphocyte

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References in periodicals archive ?

For a long time, the CD4+ T lymphocytes have been considered the only regulatory cells, due to their ability to secrete cytokines that regulate various processes of the immune response.

Tag7 (PGLYRP1) Can Induce an Emergence of the CD3+CD4+CD25+CD127+ Cells with Antitumor Activity

IL-2 plays a key role in the activation, survival, expansion, and function of T lymphocytes. It also appears to be crucial in the maintenance of regulatory T cell- (Treg-) mediated immunotolerance toward self-antigens, supported by the fact that IL-2-deficient mice develop severe autoimmunity with very low Treg and very high effector T numbers [7-9].

The Distribution of Activation Markers and Selectins on Peripheral T Lymphocytes in Preeclampsia

(15.) Los M, Droge W, Stricker K, Baeuerle PA, Schulze-Osthoff K: Hydrogen peroxide as a potent activator of T lymphocyte functions.

Effects of flaxseed lignan on in vitro mitogen-stimulated t cell proliferation

This was proven in vitro when differentiating naive [CD8.sup.+] T lymphocyte with TGF-[beta] and IL-2 and obtaining lymphocytes with suppressor action expressing [CD127.sup.-][CD25.sup.hi][FoxP3.sup.hi] markers [86]; however, these lymphocytes are not so helpful.

Description of [CD8.sup.+] Regulatory T Lymphocytes and Their Specific Intervention in Graft-versus-Host and Infectious Diseases, Autoimmunity, and Cancer

Furthermore, hyperglycemia and ketoacidosis were found to increase the levels of proinflammatory cytokines and the numbers of activated T lymphocytes in diabetic patients [14].

Lymphocyte glucose and glutamine metabolism as targets of the anti-inflammatory and immunomodulatory effects of exercise

At 3 days postinfection, neither DEP exposure nor Listeria infection resulted in significant changes in T lymphocytes when compared with the air-exposed, noninfected control (data not shown).

Alteration of pulmonary immunity to Listeria monocytogenes by diesel exhaust particles (DEPs). II. Effects of DEPs on T-cell-mediated immune responses in rats. (Research)

Functionally inert HIV-specific cytotoxic T lymphocytes do not play a major role in chronically infected adults and children.

Flow cytometry and T-cell response monitoring after smallpox vaccination

Rotavirus-specific cytotoxic T lymphocytes passively protect against gastroenteritis in suckling mice.

Vaccines for mucosal immunity to combat emerging infectious diseases

Next, the researchers turned to the peripheral blood mononuclear cells, a hodgepodge of white cells, including CD4 T lymphocytes, in the bloodstream.

Staying alive: scientists study people who outwit the AIDS virus

Yeo, PhD, assistant professor in the Department of Cellular and Molecular Medicine and Institute for Genomic Medicine, said that researchers have been trying for a very long time to understand when and how T lymphocytes give rise to effector and memory cells during an infection.

Soon, more effective vaccines to help in fight against cancer

Association of depression with viral load, CD8 T lymphocytes, and natural killer cells in women with HIV infection.

Chronically depressed women with HIV almost twice as likely as others to die from AIDS-related causes; those with mental-health services had half the death rate of those without

Giorgi, Quantitation of CD38 Activation Antigen Expression on [CD8.sup.+] T Cells in HIV-1 Infection Using CD4 Expression on [CD4.sup.+] T Lymphocytes as a Biological Calibrator, Cytometry 33, 123-132 (1998).

Quantitating fluorescence intensity from fluorophores: practical use of MESF values

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