SLC2A1 and type 2 diabetes mellitus: Basal (fasting) glucose uptake by the leg tissues was greater in patients with T2DM vs. healthy controls: 1.7 ± 0.2 vs. 1.1 ± 0.1 mg/kg leg wt per min; +55%—GLUT1-mediated NIMGU and HK2-mediated glucose metabolism of leg skeletal muscle