Chung K, Coggeshall R E
J Comp Neurol. 1984 May 1;225(1):24-30. doi: 10.1002/cne.902250104.
Processes of dorsal root ganglion cells are depicted as being unbranched until they reach the spinal cord or periphery. This is an important concept because, for example, branching of these processes might be a basis for referred pain. Recently several studies indicate that axons of rat dorsal root ganglion cells branch in or near the ganglion. The present study extends this work by showing that there are approximately 1.4 dorsal root axons for each dorsal root ganglion cell in sacral segments of the adult cat, and these data are interpreted as indicating that many dorsal root axons in this animal also branch. Thus this study provides further evidence to indicate that a revision of our ideas about the organization of primary sensory cells is desirable. In addition, this study provides data to indicate that the numbers of both dorsal root ganglion cells and dorsal root axons differ on the right as compared to the left side of the same segment.
背根神经节细胞的突起在到达脊髓或外周之前被描绘为无分支的。这是一个重要的概念，因为例如，这些突起的分支可能是牵涉痛的基础。最近的几项研究表明，大鼠背根神经节细胞的轴突在神经节内或其附近会分支。本研究通过表明成年猫骶段每个背根神经节细胞大约有1.4条背根轴突，扩展了这项工作，这些数据被解释为表明该动物的许多背根轴突也会分支。因此，本研究提供了进一步的证据，表明有必要修正我们对初级感觉细胞组织的认识。此外，本研究提供的数据表明，同一节段右侧的背根神经节细胞和背根轴突数量与左侧不同。
