One of a group of proteins on the surface of lymphocytes that enhance immune recognition. Immune cells that express the CD4 molecule are also known as helper T cells; they work with cells that express major histocompatibility complex (MHC) class II molecules to recognize antigens and stimulate cell-mediated and humoral immune responses. The human immunodeficiency virus (HIV) uses the CD4 receptor to infect T lymphocytes, macrophages, and other immunologic cells.
SEE: AIDS; SEE: cluster of differentiation
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Venes, Donald, editor. "CD4." Taber's Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/751614/all/CD4.
CD4. In: Venes DD, ed. Taber's Medical Dictionary. F.A. Davis Company; 2021. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/751614/all/CD4. Accessed May 14, 2021.
CD4. (2021). In Venes, D. (Ed.), Taber's Medical Dictionary (24th edition). F.A. Davis Company. https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/751614/all/CD4
CD4 [Internet]. In: Venes DD, editors. Taber's Medical Dictionary. F.A. Davis Company; 2021. [cited 2021 May 14]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Tabers-Dictionary/751614/all/CD4.
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