title: The structure of vertebrate slow and twitch muscle fibers.
mesh_terms: D000818:Animals; D001001:Anura; D002415:Cats; D006168:Guinea Pigs; D000882:Haplorhini; D006652:Histological Techniques; D006801:Humans; D008854:Microscopy, Electron; D009119:Muscle Contraction / Q000502:physiology*; D009132:Muscles / Q000033:anatomy & histology*; D009210:Myofibrils / Q000166:cytology*; D009411:Nerve Endings; D009469:Neuromuscular Junction; D009801:Oculomotor Muscles / Q000033:anatomy & histology; D010369:Pectoralis Muscles / Q000033:anatomy & histology; D011200:Poultry