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What is Skin? | National Geographic
5 min
🧬 El cuerpo humano·5 min·2007·EN

What is Skin? | National Geographic

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Incredible Human Machine: Skin is our entry to pain and pleasure and our protection from the world, but a deeper look reveals dead cells riddled with bacteria. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science,

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