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After protease digestion and centrifugation (1200 rpm, 5 min), PBECs were cultured in bronchial epithelial cell medium (#3211, ScienCell, San Diego, California, USA), supplemented with 100 U/ml penicillin, 100 g/ml streptomycin and 1 bronchial epithelial cell growth supplement (#3262, ScienCell, San Diego, California, USA) using poly-L-lysine-coated flasks and employed for experiments at passage 24 without mycoplasma contamination (Additional file 2: Fig

Atmospheric gas-to-particle conversion: why NPF events are observed in megacities

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All of these can lead to an increased likelihood of experiencing chest pain

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When someone says that a cigar has ten times the amount of nicotine in a cigarette, you may be quick to notice that many cigars contain roughly ten times the tobacco as a cut-leaf, paper-rolled cigarette