Bronchoconstricting effect of histamine and acetyl-beta-methacholine.
D001249:Asthma / Q000188:drug therapy*; D001980:Bronchi / Q000187:drug effects*; D006801:Humans; D008688:Methacholine Compounds / Q000494:pharmacology* / Q000627:therapeutic use*; D012119:Respiration / Q000187:drug effects*
D008688:Methacholine Compounds