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对鲇 (SilurusasotusLinnaeus)卵母细胞发育过程的超微结构变化进行观察 .鲇成熟卵卵膜明显区分为内放射带、外放射带和透明带等 3层结构 ,透明带为颗粒细胞分泌形成 ,内、外放射带则由卵母细胞本身分泌形成 .鲇卵母细胞内卵黄颗粒的形成经历几个阶段 :卵黄蛋白原、卵黄前体颗粒、卵黄中间颗粒 ,最后形成卵黄颗粒 ,其合成或加工分别在肝脏、颗粒细胞和卵母细胞内进行 .结果还讨论了卵黄核、合成泡及环状片层等细胞器的超微结构与功能的关系等 .
The ultrastructural changes of the oocytes during the development of Silurus asotus Linnaeus were observed.Egg ova were clearly divided into three layers: the inner radioactive band, the outer radioactive band and the zona pellucida. The zona pellucida was secreted by granulosa cells, , The outer radioactive band is secreted by the oocyte itself. 鲇 oocyte formation in oocytes within several stages: vitellogenin, yolk precursor particles, the middle of the yolk particles, the final formation of yolk particles, the synthesis or processing, respectively In the liver, granulosa cells and oocytes.Results also discussed the relationship between the ultrastructure and function of organelles such as egg yolk nucleus, synthetic vesicles and annular sheets.