Figure 2 Comparison of Endothelial Cell Migration (image) R&D at British American Tobacco Share Print E-Mail Caption This is the comparison of endothelial cell migration rates over a 20-hour exposure period. Exposures included untreated cells, cells exposed to cigarette smoke and cells exposed to e-cigarette vapor. Credit British American Tobacco Usage Restrictions None 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.