Figure 2 (IMAGE) R&D at British American Tobacco Caption Neutral Red assay results displaying colour change - Cells on the left have been exposed to gloTM vapour and retain the ability to incorporate the red dye. Cells on the right have been exposed to cigarettes smoke and do not retain the ability to incorporate the red dye 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.