Concerning the way to study the relative potencies of bronchodilator agents in vitro.
D000818:Animals; D001993:Bronchodilator Agents / Q000494:pharmacology*; D066298:In Vitro Techniques; D008168:Lung / Q000378:metabolism*; D051381:Rats; D011943:Receptors, Adrenergic, beta / Q000378:metabolism*
D001993:Bronchodilator Agents; D011943:Receptors, Adrenergic, beta; C028413:dihydroalprenolol receptor