McPherson, G A The affinity and efficacy of naturally occurring catecholamines at beta-adrenoceptor subtypes. [electronic resource] - The Journal of pharmacy and pharmacology Jul 1985 - 499-501 p. digital Publication Type: Journal Article ISSN: 0022-3573 Standard No.: 10.1111/j.2042-7158.1985.tb03051.x doi Subjects--Topical Terms: AnimalsCatecholamines--metabolismEpinephrine--metabolismFemaleGuinea PigsIn Vitro TechniquesIsoproterenol--pharmacologyMuscle Contraction--drug effectsMuscle Relaxants, Central--pharmacologyMyocardial Contraction--drug effectsNorepinephrine--metabolismPotassium--pharmacologyReceptors, Adrenergic, beta--metabolismUterine Contraction--drug effects