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A global prevalence of electronic nicotine delivery systems (ENDS) use among students: a systematic review and meta-analysis of 4,189,145 subjects

Lung cancer is the leading cause of cancer death in the United States for both men and women, accounting for about 1 in 5 of all cancer deaths, according to the American Cancer Society (ACS)

(E and F) Representative immunostaining images and (G) the levels of p21 and p27 in lung tissues were determined by IHC (n = 6, arrow: stained positive cells)