Animalia 4 Animals 4 Vasodilator Agents 4 animal cell 4 nonhuman 4 4 aminophenol 2 Adenosine Triphosphate 2 Aorta, Abdominal 2 Aorta, Thoracic 2 Bradykinin 2 Cells, Cultured 2 Cyclic GMP 2 Endothelium, Vascular 2 Endothelium-dependent relaxing factor 2 Enzyme Activation 2 Enzyme Inhibitors 2 Epoprostenol 2 Fetus 2 Formicidae 2 Indomethacin 2 Kinetics 2 Male 2 Methoxamine 2 Muscle Contraction 2 NG-Nitroarginine Methyl Ester 2 Naphthalenes 2 Nitric Oxide 2 Phorbol Esters 2 Phorbol ester 2 Platelet Aggregation 2