科学家们研究了养宠物为何似乎能保护孩子不会患上哮喘与过敏，他们说，答案可能在于肠道内生活的菌群。
Scientists studying why pets appear to protect kids against asthma and allergies say the answer might lie in the world of bacteria that live in the gut.
科学家们研究了养宠物为何似乎能保护孩子不会患上哮喘与过敏，他们说，答案可能在于肠道内生活的菌群。
Scientists studying why pets appear to protect kids against asthma and allergies say the answer might lie in the world of bacteria that live in the gut.
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