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American Journal of Pathology, Vol 126, 403-410, Copyright © 1987 by American Society for Investigative Pathology
REGULAR ARTICLES |
R Vazeux, N Brousse, A Jarry, D Henin, C Marche, C Vedrenne, J Mikol, M Wolff, C Michon and W Rozenbaum
Human immunodeficiency virus (HIV) RNA and proteins were detected in the brains of several AIDS patients with subacute encephalitis, by in situ hybridization and immunohistology. The majority of infected cells were mononucleated and bore processes. Using single and double immunohistologic procedures, the authors identified these cells as macrophages. The majority of them had the phenotype of microglial cells (Leu-M3-, CD4-), others were labeled with markers of circulating macrophages (Leu-M3+, CD4+/-). The presence of HIV RNA and proteins in CD4- cells could be explained by depressed CD4 antigen expression, as a result of infection or macrophage tissue differentiation.
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