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An additional feature of e-cigarettes that is now often manipulated is nicotine type, based on the ratio of the R- and S-nicotine isomers: synthetic nicotine contains a mixture of both R- and S-nicotine, whereas traditional tobacco-derived nicotine contains primarily S-nicotine 15

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This is not permitted by any commercial airline, regardless of local laws

The European Journal of Public Health 2006

Within this category, F12.20 specifically denotes Cannabis Dependence, Uncomplicated: a diagnosis that applies when criteria for dependence are met without the presence of physiological complications such as withdrawal or associated psychotic disorders