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目的 观察臂旁核 (PBN)内向丘脑腹后内侧核 (VPM)投射神经元和三叉神经脊束核尾侧亚核 (Vc)向臂旁核投射纤维和终末的分布 ,以及两者之间的突触联系 .方法 HRP逆行追踪与生物素葡聚糖胺 (BDA)顺行追踪相结合的双标技术 ,标记结果分别在光镜或电镜下观察 .结果 将 HRP注入 V
OBJECTIVE: To observe the distribution of end-to-paracular nucleus (PMN) projection fibers in the medullary paraventricular nucleus (VPN) projecting neurons and the trigeminal subnucleus caudatum (Vc) of the paraventricular nucleus (PBN) .Methods HRP retrograde tracing combined with biotin-dextran amine (BDA) tracing combined with double-labeling technique was used to observe the results.Results HRP was injected into V