Produced by the National Academy of Sciences, "Beyond Discovery: The Path from Research to Human Benefit" is a series of articles that trace the origins of important recent technological and medical advances. Each story reveals the crucial role played by basic science, the applications of which could not have been anticipated at the time of the original research. "Unraveling the Enigma of Vitamin D," for example, focuses on the twists and turns leading to the discovery and understanding of vitamin D, a substance that occurs naturally in only a few foods and also is manufactured in the skin when a


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