title: In vitro approaches to positional specification in the retinal-tectal system.
mesh_terms: D000818:Animals; D002448:Cell Adhesion; D002478:Cells, Cultured; D008954:Models, Biological; D012160:Retina / Q000166:cytology*; D013477:Superior Colliculi / Q000166:cytology*; D014795:Visual Pathways / Q000166:cytology*