CD4 and infection: We confirmed the ability of the eGFP/mTagBFP2 expressing dual-fluorescent reporter virus to identify the presence of latently (blue, BFP+) and productively (green, GFP+ or cyan, GFP+ BFP+) infected Jurkat and primary CD4+ T-cells by fluorescence microscopy after infection with R7GEmTB (Supplementary Figure 3).