Such restriction has been shown to reduce risk factors for several chronic diseases in animals and humans and to increase life span in rats, mice, fish, flies, worms and yeast.
这种限制可以减少在动物及人类身上的一些慢性疾病的发病因素，扩展老鼠，鱼，苍蝇，蠕虫和酵母的生命期。
Recently protein feeds for animals have been developed by growing yeast in a petroleum based stock.
最近已经研制出一种动物食用的蛋白质饲料，它是用石油作为基本原料加上酵母而制成的。
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