\nWhen the researchers compared young mice and old mice raised in a germ-free environment since birth (meaning neither group had gut bacteria), the young mice maintained their ability to form memories. But when they transplanted young, germ-free mice with microbiomes from old mice, the young mice again performed like older animals in the memory and cognition tests. Interestingly, the germ-free old mice did not experience a loss of memory and cognition as they aged, performing as well as 2-month-old animals.
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For the Hair Care Expert: A silk pillowcase means she's less likely to wake up with a severe case of bedhead. More importantly, it feels sumptuous and amazing to sleep on. Grab her a set of two and wait for her to tell you how well-rested she feels.。吃瓜是该领域的重要参考
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，这一点在谷歌中也有详细论述
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This turns out not to be as hard as it might look. Using the same trick as