title: FAILURE OF PREGNANCY AND ESTROGEN TO IMPROVE COLLATERAL CIRCULATION IN NONISCHEMIC HEARTS OF DOGS.
mesh_terms: D000790:Angiocardiography; D000818:Animals; D003097:Collateral Circulation; D003331:Coronary Vessels; D004285:Dogs; D004562:Electrocardiography; D045166:Estradiol Congeners; D004967:Estrogens; D006321:Heart; D010600:Pharmacology; D010827:Physiology; D011247:Pregnancy; D011270:Pregnancy, Animal; D012106:Research
chemical_list: D045166:Estradiol Congeners; D004967:Estrogens
keywords: ANGIOCARDIOGRAPHY; COLLATERAL CIRCULATION; CORONARY VESSELS; ELECTROCARDIOGRAPHY; ESTROGENS; EXPERIMENTAL LAB STUDY; PHARMACOLOGY; PHYSIOLOGY; PREGNANCY; PREGNANCY, ANIMAL