CD8

noun
\ ˌsē-(ˌ)dē-ˈāt How to pronounce CD8 (audio) \

Definition of CD8

: a glycoprotein that is found associated with a T cell receptor especially on the surface of a cytotoxic T cell and that binds to a major histocompatibility complex molecule on the surface of an antigen-presenting cell to facilitate antigen recognition and cytotoxic T cell activation often used before another noun CD8 surface markersCD8 cells [=cells bearing CD8 on their surface]… the CD8 molecule is closely associated with MHC class I molecules on antigen-presenting cells.Scientific American Medicine — compare CD4

First Known Use of CD8

1984, in the meaning defined above

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Dictionary Entries Near CD8

CD4

CD8

CDC

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Cite this Entry

“CD8.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/CD8. Accessed 17 Aug. 2022.

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More Definitions for CD8

CD8

noun
\ ˌsē-(ˌ)dē-ˈāt How to pronounce CD8 (audio) \

Medical Definition of CD8

: a glycoprotein that is found associated with a T cell receptor especially on the surface of a cytotoxic T cell and that binds to a major histocompatibility complex molecule on the surface of an antigen-presenting cell to facilitate antigen recognition and cytotoxic T cell activation often used before another noun CD8 surface markersCD8 cells [=cells bearing CD8 on their surface]… the CD8 molecule is closely associated with MHC class I molecules on antigen-presenting cells.Scientific American Medicine — compare cd4

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