part of part of epithelium digestive tract digestive tract epithelium An epithelium that lines the lumen of the digestive tract. BTO:0000956 EHDAA2:0004567 EMAPA:32928 Epithelium lining the lumen of the gut.[TAO] MA:0003201 TAO:0005123 UBERON:0003929 UMLS:C0836205 XAO:0003200 ZFA:0005123 alimentary tract epithelium digestive tract epithelial tissue epithelial tissue of digestive tract epithelial tissue of gut epithelium of digestive tract epithelium of gut gastrodermis gut epithelial tissue gut epithelium uberon