Figure 4

Effect of the concentration of PIF on the chymotrypsin-like enzyme activity in C₂C₁₂ myotubes in the absence (×) or presence of genistein 30 (▪), 100 (•) or 300 (▭)μ M (A) or 30 (□), 100 (▪) or 300 (○)μ M tryphostin A23 (B), where n=9. Differences from the control are indicated as a, P<0.05 and b, P<0.005, while differences in the presence of the inhibitor are indicated as c, P<0.005 or d, P<0.05.