KLRC1 and type 1 diabetes mellitus: As shown in Fig. 5a,b, three days after pancreatic islet allograft transplantation, the percentage of CD3-NK1.1+NKG2A+ cells in recipient T1D mice were increased compared with control T1D mice (27.18±1.09 versus 47.93±2.15; p<0.001, ANOVA test).