With 1 mol/l Fura-2/AM (Beyotime, China) for 35 min, and then
With 1 mol/l Fura-2/AM (Beyotime, China) for 35 min, and then detected with a spectrofluorometer (F-4500FL, Hitachi High-technologies, Japan). The basal emission was measured by stimulating the cells with 340/380…