ICAM1 and infection: Second, our findings suggest that the HIV-1-mediated gene expression alterations are most likely occurring in uninfected/bystander cells given that a 1.5-fold increase in the number of infected cells is seen at 24 h post-infection with ICAM-1-bearing virions compared to infection with viruses lacking host-derived ICAM-1 while the number of genes affected by NL4-3 wt is higher.