Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A glycoprotein predominantly found on the surface of helper T cells. In humans, it is a receptor for HIV, enabling the virus to gain entry into its host.
- n. A cell bearing the CD4 surface receptor.
Wiktionary
- abbr. immunology A glycoprotein found on the surface of helper T cells; in humans, it enables the HIV virus to enter a cell
WordNet 3.0
- n. a glycoprotein that is found primarily on the surface of helper T cells
Etymologies
- c(luster of) d(ifferentiation antigen) 4. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“In order to define the target antigens and the relative immunodominance of the overall HIV-1-specific CD4 T cell response in clade C virus infection, we used an IFN-γ Elispot assay to screen for HIV-1-specific CD4+ responses using an overlapping peptide set spanning the entire HIV-1 clade C proteome in 32 randomly selected subjects.”
“(B-D) Foxp3 expression in splenic CD4+ T cells 8 (B) or 14 (C) d after infection, and in sub-mandibular lymph node CD4”
“An international team has developed the prototype CD4 rapid test, similar in design to a home pregnancy test, which works with a finger-prick blood sample to measure the numbers of CD4+ T-cells in a person's blood.”
“Dot plots - top: gated on CD3+B220 − cells: CD4 versus CD8, middle: gated on SP CD4+ T cells showing the Vβ8. 2+ tumor cell population and an irrelevant Vβ-chain (Vβ6); bottom: gated on DP CD4/Vβ8. 2 as shown in histogram all other Vβ-families were negative.”
“+CD8 − lymphocytes, which are further referred to as CD4”
“HIV infects immune cells called CD4 T-cells (also called helper T cells) and slowly begins to decrease their numbers.”
The Huffington Post: Dr. Andrew Lange: How to Get a Sexually Transmitted Disease Without Having Sex
“The severity of HIV infection is measured by a count of white blood cells expressing a protein called CD4 for cluster of differentiation 4.”
“Every T4 cell has appendages called CD4 receptors, through which it exchanges information with other immune cells.”
“Yet, like an AIDS patient, she has virtually lost a vital class of immune cells known as CD4 lymphocytes.”
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