鸡视网膜颞侧周边部节细胞的形态类型  

Morphological Types of Ganglion Cells in the Temporal Periphery of the Chick Retina

作　　者：陈耀星[1] 王子旭[1] 邱春红[1] 白永平[1] 内藤顺平[2] 

机构地区：[1]中国农业大学动物医学院,北京100094 [2]名古屋大学生命农学研究科

出　　处：《农业生物技术学报》2001年第2期163-166,共4页Journal of Agricultural Biotechnology

基　　金：教育部回国人员科研启动基金资助(教外司留[1999]747号)

摘　　要：利用逆行追踪标记和细胞内注射荧光物质的方法将鸡视网膜颞侧周边部的视网膜节细胞（ＲＧＣｓ） 的全树突可视化。根据其细胞体和树突野的大小及树突分支特征，鸡视网膜颞侧周边部的ＲＧＣｓ可分为４群．６亚群，即小细胞体和小树突野的Ｉ群细胞，包括简单型的 Ｉｓ亚群和复杂型的 Ｉｃ亚群； 中等细胞体和树突野的Ⅱ群细胞，也包括 Ⅱ和 Ⅱｃ两亚群；中等细胞体和大树突野的Ⅲ群细胞，只有Ⅲｓ亚群；具有巨大的细胞体和树突野的Ⅳ群细胞，仅见Ⅳｃ亚群。各亚群的比例分别是：Ⅰｃ２８．９％、Ⅰｓ１３．２％、Ⅱｃ１５．８％、Ⅱｓ１８．４％、Ⅲｓ１５．８％和Ⅳｃ７．９％。视网膜颞侧周边部大树突野的ＲＧＣＳ亚群比视网膜中央区的明显增多（占２３．７％）。The morphological types of the retinal ganglion cells (RGCs) were studied in the chick using methods of retrograde labeling of Fast blue and intraellular injection of Lucifer Yellow. According to all sizes of somal area and dendritic field and dendritic branching pattem, retinal ganglion cells in the temporal periphery of the chick retina were divided into 4 groups and 6 subgroups, Group Ⅰ c/ Ⅰ s, Group Ⅱ c/ Ⅱ s, Group Ⅲs and Group Ⅳc. Group Ⅰ cells had small somal area and small dendritic field. They contained 2 subgroups of Ⅰ s (simplicity) and Ⅰ c (complexity). Group Ⅱ cells had medium-sized soma and dendritic field, and also included 2 subgroups of Ⅱs and Ⅱc. Group Ⅲ cells had medium-sized soma and large dendritic field, and only contained a subgroup Ⅲ s. GroupⅣ Ⅳ cells had large soma and dendritic field, and only colltained a subgroup Ⅳc. The proportion of each subgroup was 28.9% (Ⅰ c), l3.2% (Ⅰ s), l5.8% (Ⅱ c), l8.4% (Ⅱ s), l5.8% (Ⅲs) and 7.9% (Ⅳc) respectively. The large neurons (subgroup Ⅲs and Ⅳc cells), which existed in the central retina, were much less than in the temporal periphery of chick retina (about 23.7%).

关 键 词：细胞类型 节细胞 视网膜 细胞内注射 鸟类 视觉机理 鸡 

分 类 号：Q959.7[生物学—动物学] Q436