PATHOLOGY

Detailed explanation-1: -Fingernails are mostly made up of a hardened protein called keratin. Keratin is the same stuff which makes up hooves, claws and horns in animals. It’s also found in our very own hair and skin.

Detailed explanation-2: -Keratinocytes (pronounced: ker-uh-TIH-no-sites) make keratin, a type of protein that’s a basic component of hair, skin, and nails. Keratin in the skin’s outer layer helps create a protective barrier.

Detailed explanation-3: -Fingernails and toenails are made of a tough protective protein called alpha-keratin, which is a polymer. Alpha-keratin is found in the hooves, claws, and horns of vertebrates.