Differential Incorporation of CD45, CD80 (B7-1), CD86 (B7-2), and Major Histocompatibility Complex Class I and II Molecules into Human Immunodeficiency Virus Type 1 Virions and Microvesicles: Implications for Viral Pathogenesis and Immune Regulation

Abstract excerpt

Human immunodeficiency virus (HIV) infection results in a functional impairment of CD4(+) T cells long before a quantitative decline in circulating CD4(+) T cells is evident. The mechanism(s) responsible for this functional unresponsiveness and eventual depletion of CD4(+) T cells remains unclear. Both direct effects of cytopathic infection of CD4(+) cells and indirect effects in which uninfected "bystander"...

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