TRIM5 and infection: In contrast to this finding, no significant differences in susceptibility to infection by other retroviruses such as equine infectious anemia virus (EIAV), feline immunodeficiency virus (FIV), N-tropic murine leukemia virus (N-MLV) and B-tropic murine leukemia virus (B-MLV) were found between B-LCLs expressing one or the other groups of TRIM5 alleles (Fig. 3C–F).