Figure 4.

Codistribution of L1 with ankyrin_B in premyelinated axon tracts and codistribution of neurofascin with ankyrin_G in axon initial segments in neonatal mouse brain. The sections through cerebral cortex of neonatal mouse brain were double labeled with antibodies to L1 (A) and ankyrin_B (B, composite image shown in C) or antibodies to neurofascin (D and D′) and ankyrin_G (E and E′, composite images shown in F and F′). The results show L1 and ankyrin_B codistributed in the axon tracts while neurofascin and ankyrin_G colocalized at initial segments of axons. The images shown in D′–F′ were taken from the corpus callosum portion of the same section shown in D–F. Bars, 10 μm.