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Effect of dietary supplementation with OEO and Vit E on gut morphology in the jejunum in transport stress pigs. The jejunum was cut off and fixed in 10% formaldehyde-phosphate buffer and then stained with hematoxylin and eosin. Hematoxylin and eosin staining with original magnification ×100. Bars represent 200 µm. CT, control; TS, transport stress; OEO, oregano essential oil; Vit E, vitamin E.
