CD4 and type 2 diabetes mellitus: In T2D patients, CD4+ Tem and CD8+Tem cells were positively correlated with FBG (r=0.431, p<0.001, for CD4+ Tem cells; r=0.266, p<0.05, for CD8+ Tem cell) and postprandial blood glucose (PBG) (r=0.315, p<0.05, for CD4+ Tem cells; r=0.310, p<0.05, for CD8+ Tem cell).