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Evaluation of Acute and Subacute Effects of Nicotine Free Electronic Cigarette(NCFE) Vapors
This aim will examine the acute and subacute exposures to electronic cigarette (EC) vapor generated from e-liquids without nicotine (NFEC) on life-time non smokers subjects by measuring changes in nasal ion transport and TGF-β levels. Nasal ion transport will be assessed by nasal potential difference (NPD). Tumor growth factor (TGF)-β levels (mRNA and protein by ELISA) will be assessed on nasal cells and lavages.
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