Figure 1From: The M50I polymorphic substitution in association with the R263K mutation in HIV-1 subtype B integrase increases drug resistance but does not restore viral replicative fitnessOccurrence of the M50I polymorphism in treatment-naïve individuals living with HIV-1 subtype B. Sequence analysis of subtype B integrase of 2,253 clinical isolates from treatment-naïve patients from the Stanford HIV Drug Resistance Database for the following polymorphisms: M50M, M50I, M50T, M50L and M50R.Back to article page