GSR and type 2 diabetes mellitus: Contrastingly, we measured the activity of GR in the epididymal tissue, which was significantly increased by 30%, from 0.14 ± 0.03 U/mg of protein in the animals of the control group to 0.20 ± 0.02 U/mg of protein in those of the T2DM group (SP = 61%) (Figure 4e).