MeSH definition : Keratins that form into a beta-pleated sheet structure. They are principle constituents
of the corneous material of the carapace and plastron of turtles, the epidermis of
snakes and the feathers of birds.;
Keratins that form into a beta-pleated sheet structure. They are principle constituents
of the corneous material of the carapace and plastron of turtles, the epidermis of
snakes and the feathers of birds.