CD4

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noun, often attributive \ˌsē-(ˌ)dē-ˈfȯr\

Definition of CD4

  1. :  a large glycoprotein that is found on the surface especially of helper T cells, that is the receptor for HIV, and that usually functions to facilitate recognition of antigens by helper T cells

Origin and Etymology of cd4

cluster of differentiation


First Known Use: 1984


Medical Dictionary

CD4

play
noun , often attributive \-ˈfōr, -ˈfȯr\

Medical Definition of CD4

  1. :  a large glycoprotein that is found especially on the surface of helper T cells, that is the receptor for HIV, and that usually functions to facilitate recognition by helper T cell receptors of antigens complexed with molecules of a class that are found on the surface of antigen-presenting cells (as B cells and macrophages) and are the product of genes of the major histocompatibility complex


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