Effects of superovulation and early embryonic development by pituitary transplants
1986
Yang, M.P. | Kim, Y.H. | Yang, I.S. | Kwun, J.K. (Seoul National Univ., Seoul (Korea R.). Coll. of Veterinary Medicine)
The present study was undertaken to investigate the development of early embryos, the implantation rate in immature rats superovulated by transplantation of a pituitary gland. Thirty-day-old male rats were performed orchidectomy 15 days before removal of each pituitary orchidectomy 15 days before removal of each pituitary gland. A pituitary gland was transplanted under the right kidney capsule of 28-day-old female rat between 0700 and 1000h on the starting day of experiment which was designated as Day -2. Control rats were administered 4 IU PMSG at 1000 on day -2. Some of rats used to experiment were sacrificed to examine the changes of ovarian and uterine weights on days -2, -1, 0, 1, 2, 3 and 5. Other rats were sacrificed to recover the ova and observe the ovaries on Days 1, 2, 3 and 5. The implantation sites were counted on Days 8
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