title: Evidence that substance P does not mediate slow synaptic excitation within the myenteric plexus.
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects; D008784:Methysergide / Q000494:pharmacology*; D009197:Myenteric Plexus / Q000187:drug effects*; D018377:Neurotransmitter Agents / Q000494:pharmacology; D013373:Substance P / Q000494:pharmacology*; D013570:Synaptic Membranes / Q000187:drug effects
chemical_list: D018377:Neurotransmitter Agents; D013373:Substance P; D008784:Methysergide