Naresuan University 2 articles published in JoVE Medicine Isolation of Intrapulmonary Artery and Smooth Muscle Cells to Investigate Vascular Responses Kittiwoot To-on1, Usana Chatturong1, Teerapap Panklai2, Iyapa Palang1, Anjaree Inchan1, Sutthinee Wisutthathum3, Tamkeen Urooj Paracha4, Phapada Apaikawee1, Krongkarn Chootip1 1Department of Physiology, Faculty of Medical Science and Center of Excellence for Innovation in Chemistry, Naresuan University, 2Department of Pharmaceutical Chemistry and Pharmacognosy, Faculty of Pharmaceutical Sciences, Naresuan University, 3Cosmetics and Natural Products Research Center, Faculty of Pharmaceutical Sciences, Naresuan University, 4Snyder Institute for Chronic Diseases, Airways Inflammation Research Group, Department of Physiology and Pharmacology, University of Calgary Vascular responses of arterial pulmonary circulation can be explored using intrapulmonary artery (IPA) and vascular smooth muscle cells (VSMCs). The present study describes the isolation of IPA in detail and the protocols used for investigating vasorelaxation in response to physiological stimuli. Biology Isolation of Retinal Arterioles for Ex Vivo Cell Physiology Studies Tim M. Curtis*1, Declan McLaughlin2, Michael O'Hare1, Joanna Kur1, Peter Barabas1, Gordon Revolta1, C. Norman Scholfield3, J. Graham McGeown4, Mary K. McGahon*2 1 This manuscript describes a straightforward protocol for the isolation of arterioles from the rat retina that can be used in electrophysiological, calcium imaging and pressure myography studies.