3d intestinal villi. intestine lining. microscopic capillary. human intestine. concept of a healthy or

absorption amebiasis anatomy balantidiasis botulism bowel brucellosis campylobacteriosis cancer colon digestion digestive dysentery enterocytes escherichiosis fever gastric gastrointestinal giardiasis gut health helicobacter histology holera human intestinal intestine leptospirosis lining listeriosis lumen medical microscopic mucosa paratyphoid pseudotuberculosis salmonellosis small stomach system tissue toxoplasmosis tract villi villus yersiniosis