Fig. 1. Induction of Ca²⁺ oscillations by photorelease of NAADP, cADPR and IP₃. The number of similar responses (numerator) relative to the total number of experiments (denominator) is shown next to each trace. The final intracellular concentrations were: Oregon Green 488 BAPTA Dextran, 10 µM; caged NAADP, 0.5 µM; caged cADPR, 5 µM and caged IP₃, 5 µM.