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SUPPORT OF DECIDUOMA FORMATION AND GROWTH BY THE TRANSPLANTED OVARY OF THE RAT

Summary.: The luteal function of ovaries transplanted into the anterior abdominal musculature was judged by evaluation of the decidual cell response to uterine trauma, and by determining the number of days of vaginal di-oestrus.

The weight of the deciduomatous uterine horns in rats with transplanted ovaries was similar to those of the controls, indicating that neither the normal vasculature nor the normal innervation of the ovary is necessary for the induction of pseudopregnancy and that the steroid hormones necessary for deciduoma formation and growth reach the uterus by way of the systemic circulation.

After the induction of pseudopregnancy, the number of days until the subsequent pro-oestrous vaginal smear was prolonged in the rats bearing ovarian autotransplants. However, the vaginal cytology was suggestive of a prolonged pro-oestrus rather than a prolonged di-oestrus.