| Definition of 'cd4-positive t-lymphocytes' |
U.S. National Library of Medicine |
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1. cd4-positive t-lymphocytes
A critical subpopulation of T-lymphocytes involved in the induction of most immunological functions. The HIV virus has selective tropism for the T4 cell which expresses the CD4 phenotypic marker, a receptor for HIV. In fact, the key element in the profound immunosuppression seen in HIV infection is the depletion of this subset of T-lymphocytes.
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Definitions of cd4-positive t-lymphocytes
