Baden H P, Kubilus J
J Invest Dermatol. 1983 Jun;80 Suppl:36s-38s.
Fibrous proteins have been isolated from fish epidermis and shown to have physical and chemical properties similar to those of mammalian epidermal keratins. These results are most consistent with our hypothesis that hard keratins evolved late in evolution and there was not a common precursor of mammalian epidermal and hard keratin in primitive vertebrates.
已从鱼表皮中分离出纤维状蛋白质，结果表明其物理和化学性质与哺乳动物表皮角蛋白相似。这些结果与我们的假设最为一致，即硬角蛋白在进化后期才出现，原始脊椎动物中不存在哺乳动物表皮角蛋白和硬角蛋白的共同前体。
