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Incidence and timing of primary ventricular fibrillation. Left panel: percentage of animals with ventricular fibrillation (VF) per group (pooled data). The color scale ranking highlights the difference in VF incidence between pigs receiving saline and pigs receiving metoprolol. Right panel: plot of cumulative VF incidence (percentage of animal suffering at least one VF) against time from ischemia onset to first VF
