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EKG or ECG Electrocardiogram graph report paper. EST Exercise Stress Test result and pink heart shape made from pills. Packa

ECG Electrocardiogram - simplest and fastest tests used to evaluate the heart, acronym text on blackboard

A chain reaction of depolarization and repolarization along the length of a neuron

Emergency Room with Electrocardiography Line

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Electrical and Chemical Signaling in Neurons.

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ECG Electrocardiogram - simplest and fastest tests used to evaluate the heart, acronym text

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