GLUT4 protein expression in skeleton muscle of STZ-induced diabetic (DM) rats and normal rats after 12 weeks of feeding experimental and basal diets. Dietary regimens are described in footnote of Table 1. The upper panels depict representative western blots of skeletal muscle GLUT4 and β-actin (for normalization of gel loading). The relative band intensity is reported in arbitrary units, with that of NC set at one. A, p< 0.05 compared to NC by unpaired Student’s t-test; B, p< 0.05 compared to DM by unpaired Student’s t-test.