Keywords
epithelial,epithelium,epithelia,intestine,GI tract,small intestine,large intestine,peyer's patch,peyers patch,lymph node,GAIT,lymphatic tissue,lymph,lymph tissue,lymphatic nodule,ileum epithelium,ileum,enterocyte,villi,villus,crypt,crypts,lieberkuhn,crypts of lieberkuhn,intestinal epithelium