T cell
noun
: any of several lymphocytes (such as a helper T cell) that differentiate in the thymus, possess highly specific cell-surface antigen receptors, and include some that control the initiation or suppression of cell-mediated and humoral immunity (as by the regulation of T and B cell maturation and proliferation) and others that lyse antigen-bearing cells : t lymphocyte
The immature lymphoid cell, in turn, can be processed into a B cell, which makes infection-fighting antibodies, or a T cell, which recognizes foreign tissue and virally infected cells and directs the activities of the rest of the immune system.—
Gina Kolata
Gina KolataT cells recognize antigen only in association with cell surface molecules encoded by the major histocompatibility complex …—Miranda Robertson
see helper t cell, killer t cell compare b cell
Miranda RobertsonExamples of T cell in a Sentence
Recent Examples on the Web
Still, Bryan was impressed an early dose of CAR T cells worked quickly in two dogs, back to back, as were the owners.
—Dan Perry, Newsweek, 31 Jan. 2025
Reina-Campos leads research into how the body’s T cells might be used to fight tumors.
—Noah Lyons, San Diego Union-Tribune, 28 Jan. 2025
The scientists discovered that this specific flavonoid acts as a microbiological antagonist in the gut that ultimately boosts the number of regulatory T cells (T-regs), which suppress the body’s allergic response.
—New Atlas, 30 Dec. 2024
Retinoic acid then triggers the development of regulatory T cells (T-regs), immune cells that suppress the body’s allergic response.
—New Atlas, 21 Dec. 2024
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Dan Perry, Newsweek, 31 Jan. 2025
Reina-Campos leads research into how the body’s T cells might be used to fight tumors.
—Noah Lyons, San Diego Union-Tribune, 28 Jan. 2025
The scientists discovered that this specific flavonoid acts as a microbiological antagonist in the gut that ultimately boosts the number of regulatory T cells (T-regs), which suppress the body’s allergic response.
—New Atlas, 30 Dec. 2024
Retinoic acid then triggers the development of regulatory T cells (T-regs), immune cells that suppress the body’s allergic response.
—New Atlas, 21 Dec. 2024
See all Example Sentences for T cell
Dictionary Entries Near T cell
Cite this Entry
“T cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T%20cell. Accessed 10 Feb. 2025.
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