Ishii H, Suzuki K, Aikawa H, Nonaka I
J Neurocytol. 1985 Apr;14(2):261-7. doi: 10.1007/BF01258451.
Collections of microvillus-like Schwann cell fingers identical to those described previously in the nodal gap substance were commonly found along the internodes of large myelinated fibres in the spinal roots of adult mice. They were covered by Schwann cell basal lamina and focally protruded from the outer cytoplasmic Schwann cell compartment. Unlike nodal Schwann cell fingers, these internodal fingers had no contact with the axolemma, but were directed toward the endoneurium. These were not recognized in the distal peripheral nerves. The frequent occurrence of internodal Schwann cell fingers in the spinal root fibres suggests that these structures may be involved in some electrophysiological regulatory mechanism in this particular region of the nervous system.
在成年小鼠脊髓神经根中大的有髓纤维节间，通常能发现与先前在结间隙物质中所描述的类似微绒毛样的施万细胞指状结构。它们被施万细胞基膜覆盖，并从施万细胞胞质外侧局部突出。与结处的施万细胞指状结构不同，这些节间指状结构不与轴膜接触，而是指向神经内膜。在远端周围神经中未发现这些结构。脊髓神经根纤维中节间施万细胞指状结构的频繁出现表明，这些结构可能参与了神经系统这一特定区域的某些电生理调节机制。
