Frank E, Jansen J K, Rinvik E
J Comp Neurol. 1975 Jan 1;159(1):1-13. doi: 10.1002/cne.901590102.
There is one particularly large axon in the medial bundle of the nerve cord of the leech. It extends along the entire length of the cord and is connected to a single cell body in each ganglion. The cell bodies in adjacent ganglia are tightly electrically coupled, and dye injected into one cell body can diffuse along the axon and into the cell body of the next ganglion. If the nerve cord is cut between two ganglia, neither end of the axon degenerates. Repair of the axon appears to occur by end-to-end fusion.
水蛭神经索内侧束中有一条特别粗大的轴突。它沿着神经索的全长延伸，并与每个神经节中的单个细胞体相连。相邻神经节中的细胞体紧密电耦合，注入一个细胞体的染料可以沿着轴突扩散到下一个神经节的细胞体中。如果在两个神经节之间切断神经索，轴突的两端都不会退化。轴突的修复似乎是通过端对端融合实现的。
