ERVW-1 and coinfection: In the absence of MTb co-infection, p24 levels were also significantly lower in the PBMC cultures infected with HIV-1Lai/Bal-env–κB II-Mut, HIV-1Lai/Bal-env-κB I+II-Mut and HIV-1Lai/Bal-env-N5-Mut, but not HIV-1Lai/Bal-env-κB I-Mut, in comparison to wild-type virus (Figure 4C).