The Body's Defenders
Body & HealthAges 6–8

The Body's Defenders

Meet the defenders that guard your body: skin and moist linings, tears and blinking, and white blood cells that surround and break down microbes. Find out how the immune system remembers some encounters and why it leaves helpful gut microbes alone.

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The Body's Defenders
Body & HealthAges 6–8

The Body's Defenders

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Meet the defenders that guard your body: skin and moist linings, tears and blinking, and white blood cells that surround and break down microbes. Find out how the immune system remembers some encounters and why it leaves helpful gut microbes alone.