One escape, Nef EEVGFPVKPQV (Nef 64–74), occurred very early in infection, and two escapes, Env RQGYSPLSFQTLIPNPRG (Env 709–726) and Gag VKVIEEKAFSPEVIPMFT (Gag 156–173), occurred late (Figure 5). This evidence concerns the gene S100B and infection.