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鸽子颈脊髓中上升、下降及分支纤维的起源细胞。

Cells of origin of ascending and descending as well as branching fibers in the cervical spinal cord of the pigeon.

作者信息

Necker R

机构信息

Institut für Tierphysiologie, Ruhr-Universität Bochum, F.R.G.

出版信息

Neurosci Lett. 1990 Oct 30;119(1):1-4. doi: 10.1016/0304-3940(90)90740-z.

DOI:10.1016/0304-3940(90)90740-z
PMID:2097571
Abstract

Ascending and descending projections of spinal neurons (cervical enlargement) were studied with the retrograde transport of horseradish peroxidase (HRP) and with the fluorescent tracers Fast blue and rhodamine isothiocyanate (single and double labeling). Ascending and descending projections arise from the same laminae of the spinal grey except for neurons in contralateral lamina I and avian cervical Clarke's column which have ascending fibers only. A significant number of cervical nucleus proprius neurons (lamina IV) descends to the lumbar enlargement. Neurons with branching fibers were rare (less than 10 per cent).

摘要

利用辣根过氧化物酶（HRP）逆行运输法以及荧光示踪剂快蓝和异硫氰酸罗丹明（单标记和双标记），对脊髓神经元（颈膨大）的上行和下行投射进行了研究。除了对侧I层神经元和禽类颈段克拉克柱中的神经元仅具有上行纤维外，上行和下行投射均起源于脊髓灰质的同一层。相当数量的颈固有核神经元（IV层）下行至腰膨大。具有分支纤维的神经元很少见（不到10%）。

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