title: Oriented extracellular channels and axonal guidance in the embryonic chick retina.
mesh_terms: D000818:Animals; D001369:Axons / Q000648:ultrastructure*; D002642:Chick Embryo; D008854:Microscopy, Electron; D009900:Optic Nerve / Q000196:embryology / Q000648:ultrastructure*; D012160:Retina / Q000196:embryology* / Q000648:ultrastructure