The Covax global programme, which has relied heavily on AstraZeneca vaccines, said on Monday it has struck a deal to buy 500 million doses of
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Modern brains are younger than originally thought, possibly developing as recently as 1.5 million years ago, according to a study published Thursday—after the earliest humans
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As a professor of pediatrics and cellular and molecular medicine at University of California San Diego School of Medicine, Alysson R. Muotri, Ph.D., has long
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