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Study on the effect of Isoproterenol (Iso) on intracellular calcium levels and sarcoplasmic reticulum calcium load in cardiomyocytes. Results show significant alterations in [Ca2+]i transient and SR Ca2+ load with varying Iso concentrations and frequencies.
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3 Hz 2 Hz A WT R4496C 100 μm ISO ISO 250 ms 150 100 Iso effect on [Ca 2+]i transient (% F/F0 of control) 50 0 WT R4496C WT WT R4496C R4496C 4 Hz B 120 80 Iso effect on SR Ca 2+ load (% F/F0 of control) 40 0 WT R4496C WT WT R4496C R4496C 4 Hz 3 Hz 2 Hz