Effect of mannan-oligosaccharide (MOS) on intestine and liver hitological structures: it is identified that extensions which are villus like intestine and intestine epithelium morphology are normal in A and E sections, vascular structure and minimal lipid vacuolization of hepatic tissue is at normal level in F and J sections (H&E, Bar; A-E: 200 µm, F-J: 20 µm).