Figure 10.
Effect of simultaneous addition of carbachol and BzATP on protein secretion from lacrimal gland acini. Peroxidase secretion, our index of protein secretion, was measured from lacrimal gland acini stimulated for 40 minutes with carbachol (Cch, 10−4 M), BzATP (10−4 M), or the two agonists added simultaneously. The calculated amount of secretion from the two agonists added simultaneously is also plotted. Results obtained in the presence (A) and absence (B) of extracellular Mg2+. Values are mean ± SEM from four independent experiments. *Significant difference from no addition. n.s., no significant difference.