Assertion: tortoise's scute | /r/MadeOf | keratin
Facets:
Source sentences:
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: Made of the same keratin found in fingernails and hooves, scutes protect the bony plates of the shell from injury and infection.
text: Scutes are made of keratin, the same material that makes up humans' fingernails.
text: (A scute is a hard plate made of keratin, the same natural substance out of which our own fingernails are made.)
text: The scutes are made of keratin, which is the primary substance in hair, nails, and hooves of other animals.
text: The scutes are made of keratin, the primary substance in our own hair and nails.
text: Made of the same keratin found in hooves, hair, and fingernails, scutes protect the shell’s bony plates from infection and injury.