title: Post-natal development of motor units and muscle fibers in rat lumbrical muscles [proceedings].
mesh_terms: D000818:Animals; D008161:Lumbosacral Region / Q000254:growth & development*; D009046:Motor Neurons / Q000648:ultrastructure*; D009132:Muscles / Q000294:innervation* / Q000648:ultrastructure; D051381:Rats