Objective to document the ultrastructural changes of node of Ranvier in early stage of axonal injury of optic nerve and explore the significance of the changes of node in delayed axotomy.
目的观察视神经轴索损伤早期郎飞结超微结构的变化，并探讨其在延迟性轴索中断中的作用。
Breast carcinoma; Intercostobrachial nerve; Axillary lymph node dissection.
乳腺癌；肋间臂神经；腋窝淋巴结清扫。
Conclusion the results suggest that dle effect of parasympathetic nerve activity on atrioventricular node function is larger than that of sinoatrial node.
结论提示迷走神经对房室结功能影响大于对窦房结功能影响。
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