Muscle biopsy.
D001706:Biopsy; D002983:Clinical Competence; D003406:Credentialing; D004503:Education, Medical, Graduate; D006801:Humans; D018482:Muscle, Skeletal / Q000503:physiopathology*; D009135:Muscular Diseases / Q000175:diagnosis* / Q000503:physiopathology; D012955:Societies, Medical