Comparative analysis of surface antigen expression on NK cells from miR-155 tg vs wt mice. Antigen expression was performed on gated NK1.1⁺CD3⁻ NK cells harvested from spleens of miR-155 tg and wt mice. The antigen of interest is labeled along the x-axis. (A) Antigens with significantly higher expression on miR-155 tg NK cells compared with wt NK cells; (B) antigens with no difference in expression; and (C) antigens with significantly lower expression on miR-155 tg NK cells compared with wt NK cells. The y-axis indicates the mean ± SEM percent of surface antigen expression on gated NK1.1⁺CD3⁻ cells from at least 5 mice/group for each antigen. *Statistically significant; see text for details.