Figure 4.
Phosphorylation levels of ERK1 (A) and ERK2 (B) in pancreas from control (white bars) and diabetic (black bars) rats after 120 min incubation with variable concentrations of GLP-1. Data are mean + SEM of n=5–9/group and represent the ratio of the intensity of bands corresponding to pERK1 and ERK1 or pERK2 and ERK2. *p<0.05 by unpaired Student t test for each concentration of GLP-1. Blots represent pERK1/2 and ERK1/2 in rat pancreas after incubation with GLP-1 at 0, 0.3, 3.3 or 33 μg/ml for control and diabetic rats.