Doublecortin and phospho-FIGQY L1 CAMs colocalize in axon fascicles during development. Double immunofluorescence of sections of rat tissue was performed with anti-phospho-FIGQY antibody and goat anti-doublecortin antibody. Phospho-FIGQY L1 CAM (a, d,g, red), doublecortin (b,e, h, green), and overlap (c, f, i).a–c, Axon tracts in the dorsal root ganglion; overlap (c). DCX, Doublecortin; DRG, dorsal root ganglion;phospho-FIGQY, phospho-FIGQY L1 CAM. Scale bar, 100 μm. d–f, Axon fascicle (arrows) in olfactory placode.axf, Axon fascicle; nb, neuroblastoma; ob, developing olfactory bulb;op, olfactory placode; vno, vomeronasal organ. Scale bar, 100 μm. g–i, Axon fascicle (arrow) in the developing mandible. Scale bar, 50 μm.