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A separate study found similar results suggesting an increase in MUC5AC protein levels in culture human bronchial epithelial cells exposed to PG:VG aerosols [37] as well as an increase gene expression for several inflammatory markers including cytokines interleukin-6, interleukin-8 and matrix metalloproteinase-9 (MMP-9), known to play a role in the pathogenesis of COPD [37]

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However, state taxes vary considerably, and some states have closed this gap with their own regulations

Like the CMS, screening is covered for those adults who have a 30 pack-year smoking history and currently smoke or who quit within the past 15 years

So far, 38 communities have passed Tobacco 21 ordinances

That pattern was in line with the theory that teens try e-cigarettes because they are curious about them and see them as a safer alternative to conventional cigarettes