Assertion: turtle's scute | /r/MadeOf | keratin
Facets:
Source sentences:
text: Scutes are made of keratin, the same material that makes up humans' fingernails.
text: Made of the same keratin found in fingernails and hooves, scutes protect the bony plates of the shell from injury and infection.
text: The shell is covered with scutes which are scales that are made of keratin (the same protein that our fingernails are made of).
text: The scutes are made of keratin, which is the primary substance in hair, nails, and hooves of other animals.