title: Electrode problems in the recording of action potentials in the human small intestine.
mesh_terms: D000200:Action Potentials; D003300:Copper; D004386:Duodenum / Q000502:physiology*; D004567:Electrodes, Implanted; D006801:Humans; D010984:Platinum
chemical_list: D010984:Platinum; D003300:Copper