title: Slow contraction of the guinea-pig proximal colon in response to the stimulation of an unidentified type of nerve.
mesh_terms: D000818:Animals; D003106:Colon / Q000294:innervation* / Q000502:physiology; D004558:Electric Stimulation; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D013779:Tetrodotoxin / Q000494:pharmacology
chemical_list: D013779:Tetrodotoxin