Purinergic autonomic neurones.
D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D001341:Autonomic Nervous System / Q000502:physiology*; D003106:Colon / Q000294:innervation; D006168:Guinea Pigs; D066298:In Vitro Techniques; D009474:Neurons / Q000502:physiology*; D011687:Purines / Q000502:physiology*; D009435:Synaptic Transmission
D011687:Purines; D000109:Acetylcholine