title: Myogenic electric organ precedes the neurogenic organ in apteronotid fish.
mesh_terms: D000818:Animals; D004553:Electric Conductivity; D004557:Electric Organ / Q000196:embryology* / Q000502:physiology; D004625:Embryo, Nonmammalian / Q000502:physiology; D005399:Fishes / Q000196:embryology*