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The heart rate response to perfusion with incremental concentrations of CCPA at baseline (before any intervention, ∆, n = 5), after 35 min of regional ischaemia and 20 min of myocardial reperfusion (■, n = 5), after ischaemic preconditioning, 35 min of regional ischaemia and 20 min of myocardial reperfusion, ○, n = 5)
