Ultrastructure of “Twin Oocytes” in the Ovaries of the Giant Pandas (Ailuropoda melanoleuca)

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Abstract

Vol.18 No.1

Ultrastructure of “Twin Oocytes” in the Ovaries of the Giant Pandas (Ailuropoda melanoleuca)

JMOR, 18(1) 48-51, 2001
DOI: 10.1274/jmor.18.48

Meijia Zhang¹ Zhihe Zhang¹ Rong Hou¹ Guanghan Li¹ Jianqiu Yu¹ Anju Zhang¹ Jishan Wang¹ Guangxin He¹ Jingchao Lan¹ Noboru Fujihara²*

¹Chengdu Research Base of Giant Panda Breeding, Chengdu 610081 P. R. China ²Animal Resource Science Section, School of Agriculture, Graduate School Kyushu University, Fukuoka 812-8581, Japan

Two pairs of the ovaries were obtained from two giant pandas which accidentally died due to hepatic disease and senility. Of these ovaries, one pair of “twin oocytes” was collected from each pair of ovaries and processed for histological observation with an electron microscope. The results from this study suggest the possibility of the existance of “twin oocytes” in the follicle and of a higher rate of twinning in the giant panda.

Keywords: Giant Panda “Twin oocytes” Isolation Electron Micrograph Twins

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