Abstract
Human immunodeficiency virus (HIV)-specific helper T-cell response was studied in human subjects and nonhuman primates either infected with HIV or immunized with different HIV protein preparations. A strong group-specific T-cell response involving T-cell proliferation and lymphokine secretion was observed in immunized chimpanzees and rhesus monkeys as well as HIV-infected chimpanzees and gibbons. HIV-infected people demonstrated a low or no HIV-specific T-cell response. In contrast, five of 14 HIV antibody-negative sexual partners of HIV-infected men recognized one or more T-cell epitopes in the envelope glycoprotein of HIV.
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