论文部分内容阅读
目的探讨东北小鲵端脑发育的阶段性特点,充实两栖类比较神经生物学和神经系统发育的研究资料。方法采用HE染色法和尼氏染色法,初步研究变态期和成体东北小鲵端脑的组织学结构特征,探讨其端脑的部分发育过程。结果嗅球结构由外侧向内侧大致分为6层。变态期东北小鲵端脑侧脑室腔小于成体东北小鲵,并且其原始大脑皮层,原始梨状区和原始海马的界限都不很清晰。原始梨状区的细胞分布与原始大脑皮层细胞和原始海马细胞相比,更为密集。变态期各核团的细胞数量和细胞密集程度均显著大于成体水平。结论变态期东北小鲵的端脑大致具备了成体结构,但仍处于脑发育分化走向成熟的过渡阶段。
Objective To explore the characteristics of the stages of telencephalon development in Litopenaeus ostreatus and to enrich the research materials of amphibians for comparative neurobiology and development of nervous system. Methods HE staining and Nissl staining were used to study the histopathological features of the telencephalon in the metamorphosis and adults in order to discuss the part of the development of the telencephalon. Results Olfactory bulb structure from the outside to the inside is roughly divided into 6 layers. Metamorphosis of the ventricle of the teleost in the lesser northeast is smaller than that of the adult lesser thalamus, and the boundaries of the primitive cerebral cortex, primitive piriform area and the primitive hippocampus are not very clear. The original pear-shaped cell distribution is more dense than the original cerebral cortex cells and the original hippocampal cells. During the metamorphosis, the number of nuclei and the degree of cell density in each nucleus were significantly greater than the adult level. Conclusion The metamorphosis of the telencephaloa obtusifoliae generally has the adult structure, but it is still in the transitional stage of the differentiation of brain development to maturity.