A microscopic study of the marmoset claw and nail.
A microscopic study of the marmoset claw and nail.
复制标题
狨猴爪和指甲的显微研究。
DOI：
10.1002/ajpa.1330280314
复制
发表时间：
1968
影响因子：
2.8
通讯作者：
Elizabeth E. Thorndike
中科院分区：
文献类型：
--
作者：
Elizabeth E. Thorndike
W. E. Le Gros Clark在他对灵长类爪子问题的研究中得出的结论是，爪子和指甲的本质区别是爪子中存在与深层相关的末端基质，而指甲中既不存在末端基质，也不存在深层。他证明了狨猴的爪子（除了拇指之外的每个手指都尖）有一个薄的深层和一个可识别的末端矩阵。本文报道并讨论了狨猴指甲也具有深层和末端基质的证据。尽管这些结构在爪子中的重要性是没有争议的，但似乎这些不再被认为是爪子和指甲之间的绝对差异。根据这一证据，不能说深层和末端基质的存在决定了爪与指甲的独特形状。
W. E. Le Gros Clark concluded in his study of the problem of the primate claw that the essential difference between claw and nail is the presence of a terminal matrix associated with a deep layer in the claw, whereas neither terminal matrix nor deep layer exists in the nail. He demonstrated that the marmoset claw (which tips every digit except the hallux) has a thin deep layer and a recognizable terminal matrix. The present paper reports and discusses evidence that the marmoset nail also has a deep layer and terminal matrix. Although the importance of these structures in the claw is not disputed, it appears that these can no longer be considered absolute differences between claw and nail. On the basis of this evidence, it cannot be claimed that the presence of the deep layer and terminal matrix determines the distinctive shape of the claw as opposed to the nail.