Comparative effects of beta-agonists on central and peripheral rat airways.
D000818:Animals; D002217:Carbachol / Q000494:pharmacology; D002976:Clenbuterol / Q000494:pharmacology*; D004983:Ethanolamines / Q000494:pharmacology*; D008168:Lung / Q000187:drug effects / Q000502:physiology*; D008297:Male; D009921:Metaproterenol / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects*; D009130:Muscle, Smooth / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains; D014132:Trachea / Q000187:drug effects / Q000502:physiology*
D004983:Ethanolamines; D009921:Metaproterenol; D002217:Carbachol; D002976:Clenbuterol