variants or T helper cell
plural T-helper cells or T helper cells
: helper t cell
Under normal conditions, T-helper cells signal to other immune-system cells and stimulate them to do battle with foreign organisms. Morton Hunt
Other sets of T cells include T helper cells, which are necessary for B lymphocytes to become antibody-producing plasma cells, and T suppressor cells, which mute the antibody response. Linda D. Caren

Word History

First Known Use

1980, in the meaning defined above

Time Traveler
The first known use of T-helper cell was in 1980

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Cite this Entry

“T-helper cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T-helper%20cell. Accessed 13 Mar. 2025.

Medical Definition

variants or T helper cell
: helper t cell
… the virus appears extraordinarily well-adapted to human blood lymphocytes; specifically to a subpopulation of these cells called T-helper cells, which serve as orchestrators of the immune system. Johnathan E. Kaplan
T helper cells are the sergeants that roust T or B cells into action. Elizabeth Pennisi
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