Приклади речень англійська зі словом "keratin"

Keratin is one of a family of fibrous structural proteins known as scleroproteins.
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Keratin is a fibrous protein produced by chordates. It may be found in hair, skin, claws, and wool.
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Cats' tongues are covered in little hooks made of keratin.
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Porcupines are covered in quills that are made of keratin (the same stuff that makes our hair and nails.) There are about 30,000 quills that cover a porcupine’s body!
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