Animals 4 Diabetes Mellitus, Experimental 4 Dogs 4 Epoprostenol 4 Pancreatectomy 4 Prostaglandins 4 Vasoconstriction 4 diabetes mellitus 4 dog 4 endocrine system 4 haloperidol 4 insulin 4 pancreas 4 pancreas resection 4 peripheral vascular system 4 phentolamine 4 phentolamine mesylate 4 prostacyclin 4 5,8,11,14 icosatetraynoic acid 2 6-oxo-PGF1α 2 Arachidonic Acid 2 Arachidonic Acids 2 Arachidonic acid 2 Arteries 2 Coronary Vessels 2 Cyclooxygenase 2 Diabetes 2 Dinoprost 2 Dinoprostone 2 Dose-Response Relationship, Drug 2