| vpu and env sequence variability of hiv-1 isolates from tanzania. | the nucleotide sequences of an approximately 1400-base pair (bp) region spanning the vpu and env (v1-v3) genes of 9 hiv-1 isolates originating from tanzania were determined. peripheral blood lymphocyte (pbl) specimens were obtained in 1988 from urban patients with clinical signs of aids attending the muhimbili medical center, dar es salaam, tanzania. 9 samples (tz005, tz012, tz016, tz017, tz023, tz030, tz053, tz064, and tz112) were randomly chosen for virus isolation by cocultivation with hiv-ne ... | 1994 | 7888237 |