A large number of mouth cells exposed to e-cigarette vapor in the laboratory die within a few days, according to a study conducted by Université Laval researchers and published in the latest issue of Journal of Cellular Physiology.

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Dr. Mahmoud Rouabhia and his team at Université Laval’s Faculty of Dental Medicine came to this conclusion after exposing gingival epithelial cells to e-cigarette vapor. “Mouth epithelium is the body’s first line of defense against microbial infection,” Professor Rouabhia explains. “This epithelium protects us against several microorganisms living in our mouths.”

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