Figure 2. Effect of pre-treatment with
-adrenoceptor antagonists (phentolamine and phenoxybenzamine, 10 µM) or vehicle on spontaneous release of iCGRP from superfused dental pulp. Levels of iCGRP were measured as described in the legend to Fig. 1. Error bars are SEM. **p < 0.01 vs. vehicle. N = 816/group.