Figure 1From: Five-year follow up of genotypic resistance patterns in HIV-1 subtype C infected patients in Botswana after failure of thymidine analogue-based regimensFrequency of HIV-1 subtype C protease mutations. A - The frequency of amino acid mutations in HIV-1 subtype C (white) or B (black) protease in drug-naïve patients are reported based on the Stanford HIV drug resistance database. B - Amino acids in HIV-1 subtype C protease of Batswana treated patients from Group 1 (white) or Group 2 (black) are reported. Where more than one amino acid change may have occurred, the most prevalent amino acid is underlined.Back to article page