The gastrointestinal tract.
Dubbins
P A
PA
D004064:Digestive System / Q000473:pathology*; D004724:Endoscopy; D005740:Gases; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D006801:Humans; D015212:Inflammatory Bowel Diseases / Q000175:diagnosis; D012039:Regional Blood Flow; D014463:Ultrasonography / Q000379:methods
D005740:Gases