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中文摘要：
哺乳动物胎儿在出生前，卵巢发生经历了众多连续的组织学变化，主要包括原生殖细胞的增殖、分化。原始卵巢和性索形成，卵原细胞的增殖、分化和凋亡，以及原始卵泡的形成、发育和闭锁等。卵巢发生是生殖活动中最初的也是重要的生理事件，认识这一过程具有特殊的意义。此前．关于猪胎儿期卵巢发育已经有零星的报道，但对于卵巢发生过程中的组织学变化尚缺乏连贯和系统的描述。现结合已有的研究报道，对猪卵巢发生过程中的组织学变化进行了全面的总结．为相关研究工作提供一定的参考。
英文摘要：
Ovarigenesis is the first but one of it is almost accomplished for offspring before delivery. the most important events in mammalian reproduction, and Generally, it consists of quite a few physiological activities, such as primordial germ cells （PGCs） proliferation and differentiation, primordial ovary and sex cord formation, oogonia proliferation, differentiation and apoptosis, and primordial follicle formation, development and atresia. Deep understanding in porcine ovarigenesis is of the great importance in livestock reproduction and even human reproductive clinics. By now, only a few reports about fetal pig ovary development have been seen, but systematic realization for porcine ovarigenesis is still needed. Based on the previous studies, this review focuses on the histological change during porcine ovarigenesis.
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