肠道细菌水平改变了的小鼠显现出了更少的恐惧，更敢于走进有光照的箱子。这是动物中毒或生病后的普遍症状。
Mice with altered digestive bacteria showed less apprehension and were less afraid to go into the well-lit box, a common sign the animals are under the influence of drugs or illness.
在实验结束的时候，限制饮食组小鼠只有7.5%胰腺发生病变，并且这些病变非常小甚至都不足以表现为疾病的症状。
Only 7.5 percent of mice on the calorie-restricted diet developed pancreatic lesions at the end of the experiment, and these lesions were so small that none exhibited symptoms of illness.
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