helicobacter pylori . cartoon stomach, bacteria

helicobacter pylori simple duodenal mucosa organ anatomy microbiota hand drawn infection gastric duodenum healing treatment heartburn hoove bloating medicine doctor gastro analysis gastroscopy test bacteria germ check inspection illness disease ulcer gastritis cancer paunch venter abdomen stomach breadbasket inside belly vector human health gut digestive colon care bowel body biology cartoon hand-drawn bacteria bright informational medical esophagus abdominal organs healthy