Meiotic Prophase in the Fetal Ovary of the House Musk Shrew, Suncus murinus
1994 年 59 巻 4 号 p. 465-469
詳細
1994 年 59 巻 4 号 p. 465-469
The sequence of oocyte maturation in the fetal ovary of the house shrew, Suncus murinus is analyzed by means of light and electron microscopy of surface-spread silver-stained preparations. The progression of cells is relatively synchronous. Meiotic prophase starts at day 20 of gestation. The peak of pachytene cells occurs on day 23. On day 24 diplotene cells are abundant. They are characterized by premature desynapsis and separation of axial elements of some bivalents. The meotic prophase is completed on day 26, when the majority of oocytes reach the dictyotene stage.
