Fig. 2From: The influence of HK2 blood group antigen on human B cell activation for ABOi-KT conditionsOptical microscope analyzed for HK2 cells. a PB group, b HK2 group, c Coculture group. d the analysis of histogram for HK2 cell quantity. Bars represent mean ± standard deviation (n = 3). Significant differences between the PB and the coculture groups were indicated with one (p < 0.05) or two (p < 0.01) asterisksBack to article page