Northern pig-tailed macaques (Macaca leonina) maintain superior CD4+ T-cell homeostasis during SIVmac239 infection

: Gradual depletion of CD4+ T cells is a typical characteristic of pathogenic SIV infection. Intriguingly, we find a spontaneous CD4+ T-cell homeostasis in northern pig-tailed macaques (Macaca leonina) during SIVmac239 infection.