HIV in the lymph node of an HIV-infected individual. An individual cell infected with HIV shown expressing HIV RNA by in situ hybridization using a radiolabeled molecular probe. Original ×500. (Adapted from G Pantaleo, AS Fauci et al: Nature 362:355, 1993.)
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Harrison's Principles of Internal Medicine, 20e: Chapter 197: Human Immunodeficiency Virus Disease: AIDS and Related Disorders