Airway hyperreactivity.
D000403:Airway Resistance / Q000187:drug effects*; D000818:Animals; D005576:Colforsin / Q000494:pharmacology*; D006168:Guinea Pigs; D006801:Humans; D007545:Isoproterenol / Q000494:pharmacology*
D005576:Colforsin; D007545:Isoproterenol