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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Onychodystrophy ： ウィキペディア英語版 Nail (anatomy) A nail is a horn-like envelope covering the tips of the fingers and toes in humans, most non-human primates, and a few other mammals. Nails are similar to claws in other animals. Fingernails and toenails are made of a tough protective protein called keratin. This protein is also found in the hooves and horns of different animals. It is made up of dead skin cells. The mammalian nail, claw, and hoof are all examples of ''ungues'' (''unguis'' ). ==Structure== The nail consists of the nail plate, the nail matrix and the nail bed below it, and the grooves surrounding it. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nail (anatomy)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.