I want to present my work of Ca2+ influx which I am doing with emptying of store by using thapsigargin(Tg) and then providing 3mM CaCl2 from outside after loading with Fura-2AM in a cancer cell. I record the fluorescent data for 105 sec only and got a sigmoid graph but I saw many papers with providing Tg and taking reading for 300 sec to 500 sec. I want to know am I doing wrong or which one is better and why? Although I can see clear differences in various samples (treated and untreated). Please suggest.