A. Effect of hypoxia on Glut1 and Glut3 protein concentrations at different time points (0hr, 24hr, 48hr and 72hrs). n=3/genotype. *p< 0.05 vs glut3+/+ ES cells. B. Sodium azide treatment inhibiting oxidative phosphorylation in ES cells. The insets demonstrate Western blots showing Glut1, Glut3 and vinculin (internal control) protein bands in glut3+/+ and glut3+/− ES cells in presence (+) or absence (-) of sodium azide, while densitometric quantification of the Glut proteins/vinculin protein, depicted as a percent of the corresponding glut3+/+ ES values is depicted below. *p<0.05 vs glut3+/+ ES cells.