helper T cell

noun

Definition of helper T cell

: a T cell that participates in an immune response by recognizing a foreign antigen and secreting lymphokines to activate T cell and B cell proliferation and that usually carries CD4 molecular markers on its cell surface

called also helper cell, T-helper cell

First Known Use of helper T cell

1972, in the meaning defined above

Learn More About helper T cell

Time Traveler for helper T cell

Time Traveler

The first known use of helper T cell was in 1972

See more words from the same year

Dictionary Entries Near helper T cell

helper

helper T cell

helpful

See More Nearby Entries 

Statistics for helper T cell

Cite this Entry

“Helper T cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/helper%20T%20cell. Accessed 27 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for helper T cell

helper T cell

noun
help·​er T cell | \ ˌhel-pər-ˈtē- How to pronounce helper T cell (audio) \

Medical Definition of helper T cell

: a T cell that participates in an immune response by recognizing a foreign antigen and secreting lymphokines to activate T cell and B cell proliferation, that usually carries CD4 molecular markers on its cell surface, and that is reduced to 20 percent or less of normal numbers in AIDS

called also helper cell, helper lymphocyte, helper T lymphocyte

— compare cytotoxic t cell, suppressor t cell

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!