Finger nails are made of a protein called keratin.
Finger nails (and toe nails) are made of keratin.
finger nails are made of long fibers
Yes, it is like our finger nails
hard hair or keratin which is made of the same substance as hair
Wouldn't it be karatin like finger nails?
Nails (and finger nails) have volume.
No one invented finger nails.
Finger and toe nails are composed mostly of a fibrous protein called keratin.
Actually, finger nails contain protein (called "keratin").
'Keratin' is a structural protein, which our hair, nails, and animal horns are mostly made from.
By system, you mean category.. I'm not sure if you mean finger nails or like tool nails, so I'll give you both. Finger nails: Body parts Tool nails: Hardware
The rattle is made up of keratin - the same substance that makes up the outer layer of skin, hair, nails, etc.