Expression profile of differentially regulated mRNA transcripts in HIV-1 infected versus uninfected subjects. (A). Hierarchical clustering of differentially regulated mRNA in LVL compared to control; and (B), CT and HVL. The probes in this clustergram are significantly differentially regulated (p < 0.05). Red indicates high, blue indicates low, and gray stands for no change in level of expression. Numbers on X-axis represent subject group; Y-axis represents the gene symbol. CT, uninfected controls; LVL, low viral load subjects; HVL, high viral load subjects.