title: The effect of prostaglandin E 1  and E 2  on isolated frog intestine.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001001:Anura; D066298:In Vitro Techniques; D007421:Intestine, Small / Q000187:drug effects*; D009119:Muscle Contraction / Q000187:drug effects; D011453:Prostaglandins / Q000494:pharmacology*; D011894:Rana pipiens
chemical_list: D011453:Prostaglandins; D000109:Acetylcholine