“Ni<sup>2+</sup> (a capacitative Ca<sup>2+</sup> inhibitor), but … SKF-96365 (a passive Ca<sup>2+</sup> entry inhibitor) nor econazole (a capacitative Ca<sup>2+</sup> inhibitor in non-excitable cells), inhibited Ca <sup>2+</sup> undershoot recovery and SR-Ca<sup>2+</sup> load.”