DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Editorial use only.
Oesophageal manometry and pH testing equipment. The former allows the motor function of the oesophagus to be tested, while the latter is used to diagnose conditions such as gastro-oesophageal reflux disease (GORD). These tubes contain water and neutral (pH 7) solution used to calibrate the sensors and recorder (bottom).
Model release not required. Property release not available.