PML and infection: In order to obtain a more complete picture of the importance of PML in the permissiveness to retroviruses in this immune cell line, we performed additional infections with this HIV-1 vector as well as with GFP-expressing vectors derived from the macaque strain of the simian immunodeficiency virus (SIVmac-GFP), the equine infectious anemia virus (EIAVGFP), and the B-tropic murine leukemia virus (B-MLVGFP).