FIG. 2.

Mean and standard deviations of percentages and absolute CD3⁺CD4⁺ lymphocyte counts (A), CD3⁺CD8⁺ lymphocyte counts (B), and CD20⁺ lymphocyte counts are shown from week –6 to week 60 post-SIVmac251 infection. Absolute lymphocyte counts were determined with a VetScan HMT Hematology Analyzer, and the absolute numbers of lymphocyte populations were determined by the following equation: (Percent CD marker expression × absolute lymphocyte count)/100. There were no statistically significant differences between the groups [(A) p = 0.83, power = 14%; (B) p = 0.77, power = 17%; (C) p = 0.66, power = 26%]. The arrow indicates the day of SIV infection.