Specific granules in the endothelia of blood and lymphatic vessels in the cardiac valves of dogs.
D000818:Animals; D001021:Aortic Valve / Q000648:ultrastructure; D001808:Blood Vessels / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004285:Dogs; D004727:Endothelium / Q000648:ultrastructure; D006351:Heart Valves / Q000648:ultrastructure*; D008208:Lymphatic System / Q000648:ultrastructure*; D008928:Mitochondria / Q000648:ultrastructure; D008943:Mitral Valve / Q000648:ultrastructure