Smooth Muscle Cells (IMAGE) Yale University Caption Smooth muscle cells coat distal pulmonary arterioles in hypoxia-induced pulmonary hypertension. Credit Yale University, Daniel Greif Usage Restrictions Please Credit Yale University, Daniel Greif License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.