title: Relative responsiveness (rho): a critical analysis of a new method in receptor differentiation.
abstract: The rho ratio, which measures the capability of a receptor system to induce a maximal contraction after saturation by a full agonist was analysed from the standpoint of its variability considering the values obtained either for a given receptor system in the same type of preparation or for different types of preparation. This variability was discussed on the grounds of receptor theory, as the basis for a new method in receptor differentiation.
mesh_terms: D000818:Animals; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D009119:Muscle Contraction / Q000187:drug effects; D009129:Muscle Tonus / Q000187:drug effects; D051381:Rats; D011942:Receptors, Adrenergic, alpha / Q000187:drug effects; D011955:Receptors, Drug / Q000187:drug effects*; D014649:Vas Deferens / Q000187:drug effects
chemical_list: D011942:Receptors, Adrenergic, alpha; D011955:Receptors, Drug