title: Evidence for the cell surface locus of presynaptic purine nucleotide receptors in the guinea-pig ileum.
mesh_terms: D000241:Adenosine / Q000494:pharmacology; D000818:Animals; D004176:Dipyridamole / Q000494:pharmacology; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects / Q000294:innervation; D066298:In Vitro Techniques; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D011685:Purine Nucleotides / Q000037:antagonists & inhibitors / Q000494:pharmacology / Q000502:physiology*; D017981:Receptors, Neurotransmitter / Q000187:drug effects / Q000502:physiology*; D013806:Theophylline / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D011685:Purine Nucleotides; D017981:Receptors, Neurotransmitter; D004176:Dipyridamole; D013806:Theophylline; D000241:Adenosine