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1·Objective To study enterocyte mitochondrial dysfunction of neonatal rats undergoing surgical stress and the protective effects of melatonin.

结论线粒体损伤是外科应激后新生鼠小肠上皮细胞肠道损伤的早期表现。

2·Conclusion EGF can preserve the mucosal structure of the graft, maintain the integrity of the ultrastructure of graft enterocyte after small bowel transplantation in rat.

结论EGF能较好保护大鼠移植小肠黏膜结构，维持移植肠上皮细胞超微结构的完整。