The keratinization of epidermis and its derivatives, especially the hair, as shown by x-ray diffraction and histochemical studies.
D004817:Epidermis; D006197:Hair; D006801:Humans; D038081:Organogenesis; D012867:Skin; D012879:Skin Physiological Phenomena; D014961:X-Ray Diffraction; D014965:X-Rays
HAIR; ROENTGEN RAYS; SKIN