In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).
Scientific research utilizes animals to better understand specific illnesses and therapeutics and their physical and psychological impacts. Scientists commonly use rodents because of their biological ...
Smithsonian Magazine on MSN
James Webb Space Telescope Reveals That Most Galaxies Rotate Clockwise
NASA’s James Webb Space Telescope (JWST) launched into orbit around the sun in December 2021. Since then, it has been ...
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