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Aerosolized allyl isothiocyanate- (1–30 mM) or cinnamaldehyde- (10–30 mM) induced cough in a concentration-dependent manner. *P < 0.05, analysis of variance and Bonferroni's test versus vehicle (VEH, 5% ethanol and 3.5% Tween-80 in isotonic saline). Each column is presented as mean ± SE of at least six experiments.
