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The change in specific airway conductance produced by smoking a cigarette under standard conditions was measured in 91 heavy smokers. Subsequently 19 of the most reactive subjects smoked two cigarettes with different filters and another containing cigar tobacco. The results indicated that reactivity to cigarette smoke was reduced significantly by increasing the retention efficiency of the filter and that reactivity to inhaled cigar-tobacco smoke was no less than that to cigarette smoke.


Journal article


Br Med J

Publication Date





269 - 271


Adult, Bronchi, Filtration, Humans, Male, Middle Aged, Plethysmography, Respiratory Physiological Phenomena, Smoking, Spirometry