- Hard parts (hair, teeth, nails, feathers, hooves, scales) developed from the epidermis in vertebrates.
- Outer chitinous envelope of an insect, or the chitinous or calcareous covering of certain crustaceans and other invertebrates.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.