title: Influence of acute hypoxia on Z-line width of cardiac muscle.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D006321:Heart / Q000503:physiopathology*; D000860:Hypoxia / Q000503:physiopathology*; D009200:Myocardial Contraction; D009206:Myocardium / Q000648:ultrastructure