A retired British shop clerk received the first shot in the country’s COVID-19 vaccination program Tuesday, the start of an unprecedented global immunization effort intended to offer a route out of a pandemic that has killed 1.5 million. Margaret Keenan,…
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A bypass route for the coronary vessels in the heart?
Cardiovascular disease is the leading cause of mortality, and ischemic heart disease is a major cause of death worldwide. Coronary vessels that nourish the heart develop from three main sources, with the endocardium on the inner surface of the hearts…
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