Counterintuitively, productively infected (p24+) CD4 T cells exhibited longer telomeres than p24- bystander cells, which had longer telomeres at initial (day 3) HIV infection compared to uninfected cells, and telomere lengths were shortened in both p24+ and p24- cells by day 7 after HIV infection (Figure 3G). The gene discussed is CD4; the disease is HIV infectious disease.