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  • Title: Carbon monoxide exposure from commercial brand cigarettes under controlled smoking conditions.
    Author: Weinhold LL, Stitzer ML, Yingling JE.
    Journal: Pharmacol Biochem Behav; 1988 Sep; 31(1):93-6. PubMed ID: 3252265.
    Abstract:
    Carbon monoxide (CO) exposure from ultralow-, low- and high-CO delivery commercial cigarettes was examined under controlled smoking conditions. Seven chronic smokers of mid- to high-CO delivery commercial cigarettes served in the experiment. CO level increases of 2.10, 5.76 and 7.38 ppm were obtained from ultralow-yield (1.6 mg CO delivery), low-yield (5.9 mg CO delivery) and high-yield (14.3 mg CO delivery) cigarettes, respectively. Subjects achieved significantly higher increases in CO levels from both low- and high-yield cigarettes than from ultralow-yield cigarettes, but increased levels of CO from low- and high-yield cigarettes were not different from each other. The data suggest that degree of CO absorption by the lungs during a short period of time may limit increases in CO levels obtained from high-yield cigarettes.
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