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Typical mouse electrocardiogram and arrhythmia count during exposure. A. Typical mouse ECG during normal sinus rhythm and B. a non-conducted p-wave (NCPW) - represents a sudden loss of conduction from the atria to the ventricles. C. Non-conducted p-waves were significantly increased only in mice exposed to UFCAPs + O3. Values are mean ± SEM. p < 0.05; *significantly different from FA, ∆ significantly different from UFCAPs alone, □ significantly different from O3 alone (n = 6).
