Genetic susceptibility may play an important role and explains why some people develop lung cancer and others do not, given the same tobacco or indoor radon exposures.6,7 Tobacco smoke, despite damaging DNA, has an additional effect in DNA repair pathway activity, reducing the detectable amount of some repair proteins, (including XPC, OGG1 and OGG2) in pulmonary tissue in mouse models.8 Tobacco smoke exposure induces bulky DNA adducts, which have a linear relationship with carcinogenesis at low exposure, but with high doses may reach a steady state, possibly due to DNA repair pathway saturation and increased apoptosis.9,10 Low capacity in DNA repair is related with an increased association with lung cancer.11,12 There are three major types of DNA repair mechanisms: nucleotide excision repair (NER), the main route in mammals which repair DNA damaged by ultraviolet light, environmental mutagens and chemotherapy12
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Diacetyl is also used in many other types of artificial flavorings, including butter flavors in microwave popcorn
In a more candid moment, Charli revealed that she'd spent years 'never nominated for anything' and said she'd always felt an 'outsider' but told fans her huge BRITs triumph proved successes took time
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