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Childhood Exposure to Germs Can Bolster Immune System
Voice of America The research found that adult mice raised in a germ-free lab environment were more likely than normal lab mice to develop allergies, asthma and other serious autoimmune disorders, in which normally defensive immune system cells turn against the body's … Grime Can Be Good For You? The (good) dirt on dirt Recommended: In praise of germs: Why common bugs are necessary for kids |
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