cigarette smoking lung cancer Cigarettes Causes PDF] Cigarette smoking and lung

38 investigated concentrations and methylation rates of free DNA fragments, as well as total nucleated cell and macrophage counts, in bronchoalveolar lavage fluid from 19 dogs, all with chronic bronchitis, divided into two groups (SHS-exposed vs non-exposed), classified according to serum cotinine levels 38

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Exposure to secondhand smoke can come from many locations including homes, restaurants, worksites, public places, and vehicles

This means vaping may not be entirely safe, it may be only slightly less hazardous than smoking but still not safe