Manso M J, Anadón R
Departamento de Biología Celular y Molecular, Facultad de Ciencias, Universidad de la Coruña, Spain.
J Comp Neurol. 1993 Jul 22;333(4):485-502. doi: 10.1002/cne.903330403.
The telencephalon of the small-spotted dogfish, Scyliorhinus canicula L., was examined by Nissl and Golgi-aldehyde techniques. On the basis of differences in perikaryal and dendritic morphology and size, several cell types were distinguished in pallial and subpallial regions, most of them reported here for the first time in elasmobranchs. In the pallium, the pallium dorsalis is the richest in cell types (eight types of neurons), whereas the neuron population of the pallium medialis is the most homogeneous. Dendrites of most neuron types in the pallium are smooth or sparsely thorny. Interestingly, the pallium dorsalis and pallium lateralis contain a type of primitive pyramidal cell characterized by the dense appearance of its thorny dendrites. In the subpallium, the area superficialis basalis contains a heterogeneous population (six types of neurons): large radial cells are the most characteristic cell type. Dendrites of these cell types are smooth or sparsely thorny. The cell populations of the nucleus N are roughly similar to those of the area superficialis basalis, but they lack the large radial cells characteristic of this area. The area centralis subpallialis and striatum consist of populations of small neurons. The regio septalis contains a rather homogeneous population of small cells. The populations in the nucleus entopeduncularis and the nucleus interstitialis of the basal forebrain bundle are the least varied and consist of large radial cells and bipolar cells similar to those of the area superficialis basalis. This investigation reveals important differences in cytoarchitecture that should be useful in the interpretation of immunocytochemical, tracing, and electrophysiological studies of the telencephalon of elasmobranchs.
采用尼氏染色法和高尔基醛染色法对斑点猫鲨（Scyliorhinus canicula L.）的端脑进行了检查。根据神经细胞体和树突的形态及大小差异，在大脑皮质和皮质下区域区分出了几种细胞类型，其中大多数细胞类型在此首次报道见于板鳃亚纲鱼类。在大脑皮质中，背侧大脑皮质的细胞类型最为丰富（有八种神经元类型），而内侧大脑皮质的神经元群体最为单一。大脑皮质中大多数神经元类型的树突是光滑的或有稀疏的棘突。有趣的是，背侧大脑皮质和外侧大脑皮质含有一种原始的锥体细胞，其特征是有棘突的树突外观密集。在皮质下区域，基底浅部区域含有异质群体（六种神经元类型）：大型放射状细胞是最具特征性的细胞类型。这些细胞类型的树突是光滑的或有稀疏的棘突。N核的细胞群体与基底浅部区域的大致相似，但缺少该区域特有的大型放射状细胞。皮质下中央区域和纹状体由小神经元群体组成。隔区含有相当单一的小细胞群体。基底前脑束内的脚内核和间质核中的细胞群体变化最小，由与基底浅部区域相似的大型放射状细胞和双极细胞组成。这项研究揭示了细胞结构上的重要差异，这对于解释板鳃亚纲鱼类端脑的免疫细胞化学、追踪和电生理研究应该是有用的。
