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. 2021 Oct 18;11:20570. doi: 10.1038/s41598-021-99891-9

Figure 2.

Figure 2

Arrhythmias induced by programmed electrical stimulation (A), and by isoproterenol challenge (B) in Lepr db/db eNOS −/− (2KO) mice (left) and HFD + STZ mice (right). ECG and action potential (AP) traces were recorded from Langendorff perfused hearts. AP action potential, ECG electrocardiogram, S1 baseline pacing, S2 premature stimulus.