Okawa, H [Contraction of the ureter of the guinea pig and the effect of trivalent cations]. [electronic resource] - Nihon Heikatsukin Gakkai zasshi Sep 1974 - 176-7 p. digital Publication Type: Journal Article ISSN: 0374-3527 Subjects--Topical Terms: AnimalsGuinea PigsHolmium--pharmacologyIn Vitro TechniquesLanthanum--pharmacologyMuscle Contraction--drug effectsMuscle, Smooth--physiologySamarium--pharmacologyUreter--physiologyYttrium--pharmacology