title: [The ultrastructure of the muscle fiber and physical activity].
mesh_terms: D001706:Biopsy; D001707:Biopsy, Needle; D006801:Humans; D008931:Mitochondria, Muscle / Q000648:ultrastructure; D009119:Muscle Contraction; D009132:Muscles / Q000648:ultrastructure*; D009210:Myofibrils / Q000648:ultrastructure; D010806:Physical Education and Training
vernacular_title: Muskelfiberns finstruktur och fysisk aktivitet.