F. Traces showing average changes (mean±s.e.m.) in intracellular Ca2+ (Fura2 ratio) over time in response to perfusion of different [Ca2+]o as indicated in the upper bar with constructs as indicated expressed in HEKS1/S2-/-. G. Quantification of the relative reduction of ratio/time or ratio for cells (135 H Data information: , ***P<0.001, Kruskal-Wallis Anova with Dunn's multiple comparisons test Data points (total n) were obtained from three biological replicates with each three technical replicates (with multiple cells) and shown as mean±s.e.m for traces (F) and as scatter plots with the underlying boxes showing the means for individual parameters (G). 