Medical Definition of CD4

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

CD4: A large glycoprotein molecule found on the surface of T lymphocytes that serves as the receptor for HIV. The CD4 gene is on chromosome 12 in region 12pter-p12. CD4 is also called T4. See also: Absolute CD4 count.

Reviewed on 12/21/2018

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