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The Last Cigarette Ad To Appear on Television
Sputum cytology Your doctor takes a sample of sputum, or the mucus you cough up from your lungs, and then examines it under a microscope to look for cancer cells
In theory, this makes sense: the weaknesses of pure activated carbon (dust, sometimes uneven airflow) and pure cellulose filters (lower adsorption capacity) are somewhat buffered
Other research centers that received National Cancer Institute funds to study the impact of the graphic warning labels with different target populations include the Lung Cancer Disparities Center at Harvard University
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