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Clean living conditions that lessen exposure to microorganisms are linked to an increase in allergies. Mouse data reveal how the environment affects allergic immune responses.
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正在进行的第三轮第五批中央生态环境保护督察15日通报典型案例，指出北京市怀柔、昌平等区生态保护和修复治理要求落实不够、监管不到位，生态修复滞后等问题仍然存在。
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