头发和指甲所含的蛋白质。
keratins — plural of keratin
一种纤维状硬蛋白,存在于皮肤的外层和角质组织如头发、羽毛、指甲和蹄中；角蛋白；[化] 角蛋白
头发和指甲所含的蛋白质。
The protein of which hair and nails are composed.
一种纤维状硬蛋白,存在于皮肤的外层和角质组织如头发、羽毛、指甲和蹄中
a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves
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