Secondhand smoke is smoke from the burning end of tobacco products, such as cigarettes, cigars, or pipes
This aberrant immune response is characterized by airway eosinophilia, goblet cell hyperplasia, airway wall remodeling, and production of allergen-specific IgE, all driven by T helper (Th)2-derived cytokines, such as interleukin (IL)-4, IL-5, and IL-13
Tobacco products accounted for about 34 percent of all in-store convenience sales in 2017 the largest of any product category but only 17 percent of profit, according to figures from the National Association of Convenience Stores
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