Rydzewski J J, Evans M H
J Anat. 1977 Jul;123(Pt 3):813-8.
An ulnar and a median nerve were taken from each of three Soay sheep, two aged 13 months and one aged 6 years. The axon diameter distribution spectra in these six nerves were determined by measurement of transverse sections stained by the Weigert-Pal technique. The histograms of myelinated axon diameters, between 1-17 micron, were unimodal in all the ulnar nerves. The mode lay between 4-5 micron in the nerves from the young sheep and between 6-7 micron in the old animal. The histograms of the median nerve axon diameters, between 1-18 micron, were all tri-modal. The nerves from the young sheep had modes between 2-3, 4-5 and 9-11 micron, and in the nerve from the old animal the modes were between 3-4, 6-7 and 12-13 micron. These findings are correlated with the conduction velocities recorded from these nerves in an earlier series of experiments.
从三只索艾羊身上各取出一条尺神经和一条正中神经，其中两只羊龄为13个月，一只羊龄为6岁。通过测量经魏格特-帕尔技术染色的横切面，确定这六条神经的轴突直径分布谱。所有尺神经中，有髓鞘轴突直径在1至17微米之间的直方图均为单峰。幼羊神经的峰值在4至5微米之间，老年动物神经的峰值在6至7微米之间。正中神经轴突直径在1至18微米之间的直方图均为三峰。幼羊的神经峰值在2至3微米、4至5微米和9至11微米之间，老年动物神经的峰值在3至4微米、6至7微米和12至13微米之间。这些发现与早期一系列实验中从这些神经记录的传导速度相关。
