Electrical Spark Can Generate Therapeutic Nitric Oxide from the Air (image) Massachusetts General Hospital Share Print E-Mail Caption An electric spark from an iridium electrode generates therapeutic nitric oxide from the air in a lightweight, portable device designed by Massachusetts General Hospital investigators. Credit Brian Wilson, Massachusetts General Hospital Photography Department Usage Restrictions Non-commercial use only. Share Print E-Mail 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.