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Schematic diagram of the different cough protocols. (A) Dose–response curve with allyl isothiocyanate, cinnamaldehyde or their vehicles. (B) Effect of ruthenium red, gentamicin, (+)camphor, HC-030031 and capsazepine on TRPA1/V1 agonist-induced cough. (C) Effect of ruthenium red, (+)camphor, HC-030031 and capsazepine on cigarette smoke-induced cough. (D) Effect of capsaicin desensitization on TRPA1/V1 agonist-induced cough.
