In one study, the cytotoxicity of cigarette smoke extract (CSE) containing nicotine (CSE-N) and nicotine-free portion (CSE-O) on human bronchial epithelial cells was studied (BEAS-2B)
There are exceptions to this rule, however, for jobs that require employees to be non-smokers as a result of their duties, such as positions that require serving in a public relations capacity for the American Cancer Society, for example
If youre not a daily smoker, packs typically make more sense than cartons because they reduce the chance of unused or aging stock and keep spend aligned with occasional use
Thus these factors may be the cause of discrepancies between these studies
Nonetheless, we cannot compare our results with finding of other groups, which is admittedly a methodological weakness
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