Fig. (2) Gp120 increases subset of CD27+/CD45RO+/CD4+ T cells. (A) Activated primary human CD4 T cells (98% pure) were treated with gp120 IIIIB and the expression of CD27 and CD45RA were analyzed by flow cytometry. (B) Pooled data from three independent experiments. P values were determined by Student’s paired t test.