Bird M M, Lieberman A R
Cell Tissue Res. 1976 Jun 11;169(1):41-7. doi: 10.1007/BF00219306.
Microtubule fascicles, resembling those characterizing the initial segment of multipolar neurons, have been observed by electron microscopy within and close to the origin of the stem process of some unipolar ganglion cells in explant cultures of embryonic chick dorsal root ganglia. Each fascile comprised 2-6 closely spaced parallel microtubules linked by electron dense cross-bridges. Since similar observations have been made on stem processes in vivo, the possibility that linked microtubules occur commonly in this site is considered. The observations are discussed in relation to a possible correlation between the presence of microtubule fascicles and the initiation of action potentials.
在鸡胚背根神经节的外植体培养中，通过电子显微镜观察到，一些单极神经节细胞的干突起始段及其附近存在微管束，这些微管束与多极神经元起始段的微管束相似。每个微管束由2 - 6根紧密排列的平行微管组成，这些微管由电子致密的横桥相连。由于在体内的干突上也有类似的观察结果，因此认为相连的微管在这个部位普遍存在。本文讨论了这些观察结果与微管束的存在和动作电位起始之间可能的相关性。
