化剂;a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves.
皮肤和头发、皮肤、指甲及蹄等组织里
纤维硬蛋
质。
质a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair feathers nails and hooves.
皮肤和头发、皮肤、指甲及蹄等组织里纤维硬蛋质。
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