title: Resistance of a separated form of canine ureteral phosphodiesterase activity to inhibition by xanthines and papaverine.
mesh_terms: D000818:Animals; D000242:Cyclic AMP / Q000378:metabolism; D006152:Cyclic GMP / Q000378:metabolism; D004285:Dogs; D006868:Hydrolysis; D010208:Papaverine / Q000494:pharmacology*; D010726:Phosphodiesterase Inhibitors; D014513:Ureter / Q000201:enzymology*; D014970:Xanthines / Q000494:pharmacology*
chemical_list: D010726:Phosphodiesterase Inhibitors; D014970:Xanthines; D010208:Papaverine; D000242:Cyclic AMP; D006152:Cyclic GMP