InsGLuc secretion assay in beta cells treated for 24 h with DMSO, SW (5 microM), or Z629 (5 microM) in the presence or absence of nifedipine (10 microM). Data are the mean +/- SD of n= 5. Differences (p< 0.05 by two-way ANOVA with Tukey’s multiple comparison test) are indicated by labeling with different letters.
