Also found in: Thesaurus, Medical, Acronyms, Encyclopedia, Wikipedia.
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.
Switch to new thesaurus
|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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.