title: A pH-measuring radio capsule for the alimentary canal.
mesh_terms: D000863:Antacids / Q000494:pharmacology; D001639:Bicarbonates / Q000494:pharmacology; D001831:Body Temperature; D004064:Digestive System / Q000187:drug effects; D004068:Digestive System Physiological Phenomena; D005762:Gastroenterology / Q000295:instrumentation*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008722:Methods; D008991:Monitoring, Physiologic; D013686:Telemetry / Q000295:instrumentation*
chemical_list: D000863:Antacids; D001639:Bicarbonates