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DNase was diluted 2-fold with HBSS, cells were centrifuged 225 g , 5 min, 4 C, and seeded onto bovine collagen-coated 6.5 mm transwell inserts (2 10 4 cells/insert) in ALI Expansion medium (50% BEBM, 50% DMEM-C, 0.5 mg/mL BSA, 80 M ethanolamine, 10 ng/mL hEGF, 0.4 M MgSO 4 , 0.3 M MgCl 2 , 1 M CaCl 2 , 30 ng/mL retinoic acid, 0.8 insulin*, 0.5 transferrin*, 1 hydrocortisone*, 1 epinephrine*, 1 bovine pituitary extract*, 1 gentamicin/amphotericin*, *relative to BEGM Bullet Kit aliquot) with RI (day 5)
It is also known that smoking is a risk factor for many fatal illnesses, including chronic lung disease, cardiovascular disease, diabetes, and cancer
This increases the appeal of smoking and makes menthol cigarettes easier to use, especially for teenagers and young adults just starting the habit