Fig. 5

TEA and quinidine did not affect CPA-triggered Ca²⁺ influx in H1355 cells. H1355 cells were bathed in Ca²⁺-free solution in the absence (a) or presence (b) of 20 mM TEA plus 30 μM quinidine; they were then exposed to 50 μM CPA followed by replenishment of 2 mM CaCl₂. Quantification of the Ca²⁺ release component (c) and the Ca²⁺ influx component (d; no significant difference between TEA + quinidine group and control group). Results are mean ± SEM of 13–14 cells from 3 separate experiments