Figure 1

SEM of HIV Env and MLV Env recruitment to viral particles. A) Cells producing HIV-1 Gag and GagPol without functional late or PR domains, and producing HIV-1 Env were labeled with 10 nm immunogold against HIV-1 Env and then imaged by SEM. B) Cells as in A, but also producing MLV Env were labeled with 10 nm (small arrow) and 18 nm (large arrow) immunogold against HIV-1 and MLV Envs, respectively, and then imaged by SEM.