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Chemist Claude Teague, a filter researcher working for R J Reynolds, found that manipulating the pH in cellulose acetate-based filters produced discolorations in the filter during smoking: The cigarette smoking public attaches great significance to visual examination of the filter material in filter tip cigarettes after smoking the cigarettes

Importance of including non-European populations in large human genetic studies to enhance precision medicine

Comparing the air we breathe to cigarette smoking is one of these methods, it effectively communicates the real dangers of long-term exposure to poor air quality and allows us to clearly compare the health implications to the known effects of smoking

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