Figure 4From: cAMP potentiates InsP3-induced Ca2+ release from the endoplasmic reticulum in blowfly salivary glandsThe competitive antagonist of cAMP-binding to PKA, 8-Br-Rp-cAMPS (A, B), and the PKA inhibitor H-89 (C, D) reverse augmentation of InsP 3 -induced Ca2+ release caused by 8-CPT-cAMP. Graphs constructed as described for Fig. 3.Back to article page