title: Stability of implanted duplicate tectal positional markers serving as targets for optic axons in adult frogs.
mesh_terms: D000818:Animals; D001001:Anura; D009434:Neural Pathways; D009900:Optic Nerve / Q000033:anatomy & histology*; D011892:Rana catesbeiana / Q000033:anatomy & histology*; D013477:Superior Colliculi / Q000033:anatomy & histology* / Q000637:transplantation; D014182:Transplantation, Autologous; D014794:Visual Fields