投射纤维

Objective To observe the developmental changes of projection and termination of proprioceptive afferent fibers in the mouse spinal cord.

目的观察本体觉传入纤维在小鼠脊髓内投射和终止的发育变化。

Central projection of the sensory fibers of the vagus nerve was traced with HRP injected into the upper cervical part of the vagus nerve.

本文将HRP注入大白鼠的颈迷走神经干，用TMB成色法追踪颈迷走神经感觉纤维向中枢的投射。

Results: It was observed that projections from IN to hypothalamus passed through the superior cerebellar peduncle, crossed in its decussation and then many of them entered posterior hypothalamic area by iontophoresis of Dextran-Texas Red to cerebellar IN. Using the methods of iontophoresis of Fluoro-Ruby and double labelling staining, it was also observed that the neurons projecting to PH in cerebellar IN were glutamatergic neurons.

结果：小脑间位核电泳Dextran-TR后示踪可见间位核神经元发出离核纤维，行走于同侧小脑上脚中，在小脑上脚交叉处交叉到对侧，然后继续走行于小脑上脚中，到下丘脑后较多纤维终止于下丘脑后区；在下丘脑后区电泳Fluoro-Ruby后可逆行追踪到小脑间位核神经元，荧光双标法显示投射到下丘脑后区的小脑间位核神经元中有谷氨酸能神经元。

Thirdly,we define a equivalence relation Rin the topology space X by the fibrewise function f ,and then we get the fibrewise quotient space X / R,we call it the fibrewise decomposition space of X .And last we discuss the relation between f and the natural mapping.

其三是，通过一个纤维映射f ： X→Y，在B上的纤维拓扑空间X中定义了一个等价关系R，得到X的纤维商空间X / R，称其为X的分解空间，最后也讨论了f与自然投射的关系。

ERK positive cell mainly distributed at nucleus of solitary tract, ambigous nucleus, and positive fibers and cells mainly distributed at medullary visceral zone, nucleus of solitary tract and ambigus nucleus. These positive cells formed an isolated zone from nucleus of solitary tract via medullary visceral zone to SP5, which could be seen using immunohistochemical stain. Positive cells and fibers also distributed at the projection from pneumogastric nerve to the stem.

免疫组织学染色可见，阳性细胞主要分布于延髓内脏带的孤束核和疑核、阳性纤维伴随阳性细胞分布于延髓内脏带的孤束核区和疑核、呈沿孤束核经延髓内脏带至三叉神经脊束核的弧行带；在迷走神经向脑干投射部位也可见阳性胞体和纤维的分布。

The results indicate that AVT sends ipsilateral and contralateral dopaminergic, as well as ipsilateral AChE-containing fibers to the rostral caudatum.

中脑腹侧被盖区除分别向同侧和对侧尾状核头部发出DOPA能纤维投射外，还向同侧尾状核头部发出AChE阳性投村纤维；

Proximal dendrites of hippocampal CAI pyramidal neurons receive mainly the inputs from schaffer collateral/associational commissural pathways, whereas the distal dendrites receive mainly the inputs from entorhinal cortex through TA pathways.

由于近端树突接受海马内部侧枝／联合纤维投射的信息，远端树突通过TA通路接受内嗅皮层投射的信息，由此提示，CA1区锥体细胞对来自海马内部和直接来自皮层的信息输入采用了不同的整合方式。

By tracking the serial sections, many thick fibers that derived from 5-HTi neurons were discovered projecting into the distant region to somata, some even project from one side to the other side, and send out many tiny branches contralaterally distributing in the wide field of the brain, so we can conclude that 5-HT may modulate distant and wide-field neural interactions.

连续切片追踪观察发现，由一些5－HT能神经元胞体发出的粗大阳性纤维可投射到距胞体很远的区域，有的甚至由一侧脑半球发出，投射到另一侧，并发出许多细小的分枝分布在对侧脑半球的广泛区域，因此可以推断出5－HT可产生广泛的远距离的神经调节作用。

Type II cells were mainly distributed in layer V of cortex. It appeared that these cells receive the CRF immunostaining fibers terminals afferent from other cells rather than synthesize CRF by themselves. It is probable that type II cells receive afferent fibers from both extracortex and type I cells within layers II -III cortex. Considered that Type I cells morphologically are inhibitory interneuron, we presumed that type I in layer II -III could inhibit activity of type II cells in layer V.

CRF阳性Ⅱ型细胞主要分布在皮层第Ⅴ层，形态学特征显示这类细胞更像是接收来自其它神经元的CRF纤维投射而非自身分泌CRF，证据显示Ⅱ-Ⅲ层CRF神经元纤维可进入第Ⅴ层，考虑到皮层的CRF神经元形态上为抑制性中间神经元，这些结果提示Ⅱ-Ⅲ层CRF神经元能够抑制第Ⅴ层神经元的活动。

METHODS: Using CB-HRP as tracer while using sodium tungstate as stabilizer of TMP to antrograde tracing the projection of optic nerve fibers on anterior region of hypothalamus and retrograde tracing the distribution of hypoglossal nerve fibers on the dorsal side of medulla.

采用结合了霍乱毒素亚单位B的辣根过氧化物酶作为示踪剂，用钨酸钠作为四氨基联苯胺显色剂的稳定剂，顺行追踪视神经纤维向下丘脑前区的投射；逆行追踪舌下神经纤维在延髓背侧的分布。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了