CD4(redirected from CD4 antigen)
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Related to CD4 antigen: CD4+ cell
A glycoprotein that is found on the surface of T cells, especially helper T cells, and functions as a receptor in activation of the cells. In humans, HIV gains entry to helper T cells by binding to the CD4 receptor.
[c(luster of) d(ifferentiation antigen) 4.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a protein on the surface of T cells and other cells, functioning as a receptor for the AIDS virus antigen.
[1980–85; c(luster of) d(ifferentiation) 4]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||CD4 - a glycoprotein that is found primarily on the surface of helper T cells; "CD4 is a receptor for HIV in humans"|
glycoprotein - a conjugated protein having a carbohydrate component
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