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What is a rinoceroses horn made of

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What is a rinoceroses horn made of?

The rhinoceros horn is made of keratin, which is a type of protein.

 

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JenniferSR

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Customer: replied 7 years ago.
My reply to you is that your answer is a very close second..no protein in horn. Sorry to give you a negative answer.

Hello JACustomer,

 

The horn is made of compressed keratin. http://animaldiversity.ummz.umich.edu/site/accounts/information/Rhinocerotidae.html

 

And, according to the Encyclopedia Britannica, keratin is a fibrous structural protein.

 

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Jennifer