Glycogen phosphorylase activity ratio (active/total), glycogen synthase activity ratio (active/total) and glycogen content.

<p>The results represent values for controls (C1, C2) and patients (P1, P2), after 7 days of differentiation. Values are mean ± SEM. The significance of the difference versus controls is: *p<0.01 and **p<0.001. Grey bars represent controls and black bars patients.