Assertion: rattlesnake's rattle | /r/HasProperty | same protein
Facets:
Source sentences:
text: The iconic rattle at the end of the Rattlesnake’s tail is made up of a hardened protein called “keratin,” the same protein that forms human hair and fingernails.
text: The iconic rattle at the end of the Rattlesnake’s tail is made up of a hardened protein called “keratin,” the same protein that forms human hair and fingernails.