CD4. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/CD4
cd4 - Medical Definition
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.
Approximately 10 percent of HIV-infected persons have progressed to AIDS within the first two to three years after infection, whereas up to 5 percent of persons have stable CD4+ T cell counts and no symptoms even after 12 or more years.
CD4+ cells-Called helper T-cells, these cells work in cell-mediated immunity by causing a form of inflammation to wall off and destroy foreign material as with a bacterial infection.
The U.S. government uses CD4 cell counts (part of the immune system) to make this distinction.
N. "CD154 Transcriptional Regulation in Primary Human CD4 T Cells.