Wound Healing (VIDEO) R&D at British American Tobacco This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption When cells are untreated or exposed to e-cig vapor, the gap closes efficiently in a scratch-wound test. Wound healing is disrupted in the presence of cigarette smoke. Credit British American Tobacco Usage Restrictions None 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.