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Changes in the ratio of Fura-2 fluorescence intensities at excitation wavelengths of 340/380 nm in Fura-2-loaded cardiomyocytes. Panel A: 50 mmol/L KCl treatment, ↓ represents KCl stimulation; Panel B: 2 mmol/L GLY and 50 mmol/L KCl stimulation, ↓ and ⇓ represent the addition of GLY and KCl, respectively.
