title: Trophic interactions in neurogenesis: a personal historical account.
mesh_terms: D000818:Animals; D002470:Cell Survival; D002642:Chick Embryo; D004626:Embryology / Q000266:history; D005121:Extremities / Q000196:embryology / Q000294:innervation / Q000637:transplantation; D005727:Ganglia, Spinal / Q000196:embryology; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D009414:Nerve Growth Factors / Q000502:physiology; D009420:Nervous System / Q000196:embryology; D009445:Neuroanatomy / Q000266:history; D009482:Neurophysiology / Q000266:history*; D011898:Ranidae; D013030:Spain; D013116:Spinal Cord / Q000196:embryology; D014184:Transplantation, Homologous; D014481:United States
chemical_list: D009414:Nerve Growth Factors