Kinetics of virus production by primary cultures obtained from HIV-1/HTLV-II–coinfected patients. (A) Cultures from PR-7 and PR-8, characterized by a high HIV-I/HTLV-II proviral load ratio. (B) Cultures from PR-9 and PR-10, with an HIV-I/HTLV-II ratio equal to 1. (C) Culture from PR-II before therapy, with a low HIV-I/HTLV-II ratio. (D) Culture from PR-12 with a very low HIV-I/HTLV-II ratio. See Figure2 for procedures.