○Megumu Takahashi^1,2, Kenta Yamauchi^1,3, Jaerin Sohn⁴, Masato Koike³, Takahiro Furuta⁴, Hiroyuki Hioki^1,3 (1. Dept Neuroanat, Juntendo Univ, Grad Sch Med, Tokyo, Japan, 2. Research Fellow of Japan Society for the Promotion of Science, 3. Dept Cell Biol and Neurosci, Juntendo Univ, Grad Sch Med, Tokyo, Japan, 4. Dept Systematic Anat and Neurobiol, Grad Sch Dent, Osaka Univ, Osaka, Japan)