Tomkinson, A The effect of isoenzyme-selective PDE inhibitors on methacholine-induced contraction of guinea-pig and rat ileum. [electronic resource] - British journal of pharmacology Aug 1996 - 2131-9 p. digital Publication Type: Journal Article ISSN: 0007-1188 Standard No.: 10.1111/j.1476-5381.1996.tb15653.x doi Subjects--Topical Terms: AnimalsDose-Response Relationship, DrugGuinea PigsIleum--drug effectsIsoproterenol--pharmacologyMaleMethacholine Chloride--pharmacologyMuscle Contraction--drug effectsPhosphodiesterase Inhibitors--pharmacologyPurinones--pharmacologyRatsRats, Sprague-DawleyVinca Alkaloids--pharmacology