stomach peptic ulcer helicobacter pylori / celiac disease small intestine lining damage. good and damaged villi

abdomen abdominal anatomy and background biology burn cancer care celiac cell colon cross damage damaged diet digestion digestive disease duodenum eat food gas gastritis good gut health helicobacter inflammation infographic intestine lining medical oesophageal organ pain peptic person physical pud pylori rug science sick small stomach system tissue torso tutor ulcer upper vector villi white wound