A new study finds that fecal transplants from old female mice appear to boost fertility and ovarian health in younger ones, indicating a direct link between gut health and reproductive health in the animals

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Фото: Majid Asgaripour / WANA / Reuters

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Number (2): Everything in this space must add up to 2. The answer is 3-2, placed horizontally.，推荐阅读WPS官方版本下载获取更多信息

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