What is the meaning of cluster of differentiation 4?

noun

  • A glycoprotein that is found primarily on the surface of helper T cells.
    • usage: "CD4 is a receptor for HIV in humans"
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). cluster of differentiation 4. Retrieved September 23, 2026, from http://smartdefine.org/cluster_of_differentiation_4/definitions/1248730
ChicagoWordNet. 2010. "cluster of differentiation 4" http://smartdefine.org/cluster_of_differentiation_4/definitions/1248730 (accessed September 23, 2026).
HarvardWordNet 2010, cluster of differentiation 4, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/cluster_of_differentiation_4/definitions/1248730>.
MLAWordNet. "cluster of differentiation 4" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/cluster_of_differentiation_4/definitions/1248730>