title: Ultrastructural changes in the heart at high altitude.
mesh_terms: D000531:Altitude; D000818:Animals; D001699:Biometry; D003593:Cytoplasm; D004739:England; D006168:Guinea Pigs; D006352:Heart Ventricles; D006652:Histological Techniques; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009206:Myocardium / Q000166:cytology*; D009210:Myofibrils; D010568:Peru; D011817:Rabbits