Furthermore, the mean value (0.925 +/- 0.567) for cumulative CD4/CD8 T cell ratios from 2 to 112 weeks post infection for FIV-infected cats was significantly less than that for the FIV-uninfected cats (1.8113 +/- 0.412; p < .0001; Figure 1b). The gene discussed is CD8A; the disease is infection.