Hayes B P, Roberts A
Proc R Soc Lond B Biol Sci. 1983 Apr 22;218(1210):61-76. doi: 10.1098/rspb.1983.0026.
The structure of the two functional types of 'free' nerve-ending in the head skin of late Xenopus embryos has been examined by horseradish peroxidase staining through their cells in the trigeminal ganglion and by electron microscopy. Type I neurites are identified as the 'movement' detectors by their purely homolateral innervation. They have many fine branches between the superficial skin cells, bearing numerous large varicosities. Type II neurites cross the midline to innervate both sides of the head as do the 'rapid transient' detectors found by physiology. They have a few fairly straight branches between the skin cell layers with few elongated varicosities.
通过辣根过氧化物酶对非洲爪蟾晚期胚胎头部皮肤中两种功能性“游离”神经末梢在三叉神经节中的细胞进行染色，并借助电子显微镜，对其结构进行了研究。I型神经突通过其纯粹的同侧神经支配被确定为“运动”探测器。它们在表皮细胞之间有许多细小分支，带有大量大的膨体。II型神经突像生理学上发现的“快速瞬变”探测器一样，穿过中线支配头部两侧。它们在皮肤细胞层之间有一些相当直的分支，带有很少的细长膨体。
