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The electrocardiograms for unrestrained and awake male and female pups were performed non-invasively by ECGenie over a period of 10 min. No significant change was observed for A-B) heart rate (beat per minute [bpm]), C-D) RR interval (milliseconds [ms]), or E-F) ST interval (milliseconds [ms]) as a result of Al2O3 NP oral exposure. The graphs show mean ± standard deviation.
