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[文献書誌] Hiroshi Ishizaka Ken Okumura,et al: "Endotheliumーderived nitric oxide as a mediator of acetylcholineーinduced coronary vasodilation in dogs" Journal of Cardiovascular Pharmacology. 18. 665-669 (1991)
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[文献書誌] Ken Okumura,et al.: "Effect of Hー1 receptor stimulation on coronary artery diameter in patients with variant angina.Comparison with effect of acetylcholine" Journal of the American College of Cardiology. 17. 338-345 (1991)
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[文献書誌] Hiroshige Yamabe Ken Okumura,et al.: "Role of endotheliumーderived nitric oxide in myocardial reactive hyperemia" American Journal of Physiology(Heart and Girculatory Physiology). (1992)
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[文献書誌] Ken Okumura,et al.: "Effect of acetylcholine on the highly stenotic coronary artery.Difference between the constrictor response of the infarctーrelated artery and noninfarctーrelated one" Journal of the American College of Cardiology. 19. (1992)
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[文献書誌] Ken Okumura,et al.: "A study on coronary hemodynamics during acetylcholineinduced coronary spasm in patients with variant angina.Endotheliumーdependent dilation in the resistance vessels" Journal of the American College of Cardiology. 19. (1992)
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[文献書誌] Ken Okumura,et al.: "Endotheliumーdependent dilator response to substance P in patients with coronary spastic angina" Journal of the American College of Cardiology. (1992)