title: Histological and ultrastructural studies on preserved hearts.
mesh_terms: D000818:Animals; D004285:Dogs; D016027:Heart Transplantation; D008929:Mitochondria, Heart / Q000648:ultrastructure; D009206:Myocardium / Q000648:ultrastructure*; D009926:Organ Preservation; D012519:Sarcoplasmic Reticulum / Q000648:ultrastructure; D013997:Time Factors