CD4

noun

a protein on the surface of T cells and other cells, functioning as a receptor for the AIDS virus antigen.

Origin of CD4

1980–85; c(luster of) d(ifferentiation) 4

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cd4

Contemporary Examples of cd4

The first difference was this: their CD4 cells, also called T-cells or T4 cells, were normal.
New Thai-Taiwanese Syndrome Is Not AIDS 2.0
Kent Sepkowitz
August 26, 2012
Since AIDS first was described, the CD4 cell count has been the clinical signpost that guided doctors and patients.
New Thai-Taiwanese Syndrome Is Not AIDS 2.0
Kent Sepkowitz
August 26, 2012

cd4 in Medicine

CD4

[sē′dē-fôr′]

n.

A glycoprotein on the surface of helper T cells that serves as a receptor for HIV.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.