Enero, M A Effect of drugs on the force of spontaneous mechanical activity in rat portal vein. [electronic resource] - Acta physiologica latino americana 1979 - 101-6 p. digital Publication Type: Journal Article ISSN: 0001-6764 Subjects--Topical Terms: Adenosine--pharmacologyAnimalsCalcium--pharmacologyDipyridamole--pharmacologyDose-Response Relationship, DrugFemaleImidazoles--pharmacologyMaleMeclofenamic Acid--pharmacologyMuscle Contraction--drug effectsMuscle, Smooth, Vascular--drug effectsNorepinephrine--pharmacologyPhosphodiesterase Inhibitors--pharmacologyPortal Vein--drug effectsProstaglandin Antagonists--pharmacologyRatsRats, Inbred Strains