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Contact: David Orenstein
Brown University

David Rand and Chen-Tseh Zhu, Brown University

Caption: David Rand, left, and Chen-Tseh Zhu managed 18 different lines of fruit flies, feeding groups from each line five different diets. They were able to examine the effects on longevity of three different elements: diet, mitochondrial DNA, and nuclear DNA.

Credit: Mike Cohea/Brown University

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