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In the decades following the Civil War, budding and polished American artists alike embraced the Grand Tour tradition with gusto, and Florence, the city that nurtured the Renaissance, returned their ardor. Americans in Florence: Sargent and the American Impressionists, an exhibit appearing at the Palazzo Strozzi in Florence, Italy, from ...

Over the decades X-ray crystallography has been fundamental in the development of many scientific fields. The method has revealed the structure and function of many biological molecules, including vitamins, drugs, proteins and nucleic acids such as DNA.