Showed that three kinds of cell junc- tion have observed:Chemical synapse (aro-dendritic synapse and dendrodrit- ic synapse),desmosome and hemidesmosonme.

• 其结果表明:日本七鳃鳗脊髓中已见到有化学突触(轴一树突触和树一树突触)、桥粒和半桥粒三种细胞连接。