Cigarette is narrow cylinder containing psychoactive material, usually tobacco, that is rolled into thin paper for smoking.most cigarettes contain "reconsuted tobacco" product known as "sheet", which consists of "recycled [tobacco] stems, stalks, scraps, collected dust, and floor sweepings", to which are added glue, chemicals and fillers the product is then sprayed with nicotine that .Tobacco smoking is the practice of smoking tobacco and inhaling tobacco smoke (consisting of particle and gaseous phases). (more broad definition may include simply taking tobacco smoke into the mouth, and then releasing it, as is done by some with tobacco pipes and cigars.)the practice is believed to have begun as early as bc in mesoamerica and south america. Ecigarette smoke (ecs) delivers nicotine through aerosols without burning tobacco. ecs is promoted as noncarcinogenic. we found that ecs induces dna damage in mouse lung, bladder, and heart and reduces dnarepair functions and proteins in lung. nicotine and its nitrosation product (methylnitrosamine)(pyridyl)butanone can cause the same effects as ecs and enhance . Philip morris international inc. stock price, stock quotes and financial overviews from markech.
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