gut wall
- mucosaMoist organ lining
- epitheliumTissue covering body surfaces
- barrierObstruction preventing passage
- permeabilityAbility to transmit fluids
- leakyAllowing unwanted seepage
membrane · absorption · villi · digestive · colon · bowel · stomach · tissue · cells · inflammation · ulcer · microbiome · bacteria · flora · protective · secretion · nutrient · abdominal