TRIM39 and infection: The groups were balanced for TRIM-5α alleles: either resistant (referred to as R here) (TFP/TFP; TFP/CYPA) or moderate (TFP/Q; Q/CYPA)/sensitive (Q/Q) (referred to as M/S here), with respect to permissiveness for SIVsmE660 infection (50, –, 53) (see Table S1 in the supplemental material).