| 蒙古绵羊胎儿卵巢发育的组织学研究 |
| |
| 引用本文： | 阿拉达尔,曹贵方,张 涌.蒙古绵羊胎儿卵巢发育的组织学研究[J].西北农林科技大学学报(社会科学版),2007,35(2):11-14. |
| |
| 作者姓名： | 阿拉达尔 曹贵方 张 涌 |
| |
| 作者单位： | 1. 西北农林科技大学,生物工程研究所,陕西,杨凌,712100
2. 内蒙古农业大学,动物医学系,动物胚胎与发育生物学研究室,内蒙古,呼和浩特,010018 |
| |
| 摘 要： | 对37-99 d胎龄的蒙古绵羊胎儿卵巢进行组织学观察。结果表明,绵羊胎儿在37 d,可以从外观上分辨雌雄,雌性胎儿的性腺初步出现卵巢的组织学特征;37-51 d为卵原细胞的共质体期,卵原细胞数量增长加快;55~76 d卵巢中逐渐充满大量的合胞体样卵母细胞群;从58 d开始卵巢皮质深层出现少量的形态不典型的原始卵泡。胎龄73 d时,皮质深层出现真正的原始卵泡;81 d时皮质中层出现大量原始卵泡;99 d时皮质深层中可看到一些初级卵泡。与成体卵母细胞相比,胎儿时期的生殖细胞有活跃的增殖分裂特征;生殖细胞发育按卵原细胞增殖→卵母细胞分化→形成原始卵泡的步骤发育,在位置分布上由卵巢皮质外层逐渐向皮质里层分步发育。
|
| 关 键 词： | 绵羊 胚胎卵巢 卵原细胞 卵母细胞 原始卵泡 |
| 文章编号： | 1671-9387(2007)02-0011-04 |
| 收稿时间： | 2006/1/16 0:00:00 |
| 修稿时间： | 2006-01-16 |
The histological study of germ cell genesis in mongolian ovine fetal ovary |
| |
| Aladaer,CAO Gui-fang,ZHANG Yong.The histological study of germ cell genesis in mongolian ovine fetal ovary[J].Journal of Northwest Sci-Tech Univ of Agr and,2007,35(2):11-14. |
| |
| Authors: | Aladaer CAO Gui-fang ZHANG Yong |
| |
| Institution: | 1(1 Institute of Bioengineering,Northwest A & F University,Yangling,Shaanxi 712100,China;2 Laboratory of Animal Embryo and Developmental Biology,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China) |
| |
| Abstract: | Using the method of histological routine,histological structure of 37-99 day-old ovine fetal ovaries were studied.When the sheep embryo is 37 days old,it can be distinguished female or male from external appearance.About 37-51 d,the quantity of oogonia grows rapidly and the synplasma-like oogonia can be found in this stage.About 55-76 d,much of the syncytium-like cell group is found in the ovary.The un-typical primordial follicle is found in the ovary cortices from 58 d.The typical primordial follicle is found in deep layer of the ovary cortices from 73 d;and on the 81 d,the number of primordial follicles increases.Primary follicles are found in deep layer of cortices at 99 d.In contrast to mature oocytes,the germ cells are active cell-growing and dividing,changing shape and even migrating within the fetal ovary,hence more changes at this development stage.Our observations provide the morphometric and apoptosis aspects of sheep fetus ovary and evidence that apoptosis in the sheep fetus ovary is associated with germ cells. |
| |
| Keywords: | mongolian sheep fetal ovaries oogonia oocyte primordial follicles |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西北农林科技大学学报(社会科学版)》浏览原始摘要信息 |
| 点击此处可从《西北农林科技大学学报(社会科学版)》下载免费的PDF全文 |
|
