Research with living systems is never simple, scientists say, so there are many possible sources of variation in any experiment, ranging from the animals and cells to the details of lab technique.
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Rep. Diana DeGette, D-Colo., and Rep. Fred Upton (right), R-Mich., who have spearheaded the 21st Century Cures Act, speak after a 2015 House of Representatives vote in its favor.
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Yes, getting exercise and eating right can significantly cut your risk of developing heart disease, a study finds, even if you inherited genes that predispose you to the illness.