In the mouse, oogonia enter the prophase of the first meiotic division and differentiate into
oocyte while developing in the fetal ovary. Shortly after birth, all oocytes are arrested in the …

Structural changes in cumulus-oocyte complexes and granulosa cells were induced by
administering pregnant mare serum gonadotropin(PMSG) and human chorionic …

抄録< jats: p> The ultrastructure of the oocyte and zygote reveals in great details the
processes of oocyte growth, maturation and fertilization. In this Chapter these details are …

The C3H/Tw mice were those showing regular 5-day cycles. A population of small follicles
(100–149 μm in diameter) started growing at oestrus, but the majority underwent atresia …

Oocyte Follicle Cells Association during Development of Human Ovarian Follicle. A Study
by High Resolution Scanning and Transmission Electron Microscopy Toggle navigation J-STAGE …

The aim of this article is to summarize and update, through an integrated analysis by
transmission electron microscopy (TEM) and high resolution scanning electron microscopy …

We developed a culture system in which two types of ovarian follicular cells were allowed to
attach to opposite sides of a collagen membrane. Using this in vitro cell culture system, we …

Intact ovarian follicles can be grown in culture but the normality of their oocyte development
has not yet been established. This work examined meiotic progression in oocytes from …

Ovum maturation in mammals is accompanied by the resumption of meiosis. This maturation
in mammalian oocytes is initiated during prenatal life or shortly after birth. The oocyte …

Follicular ruptures with intra-ovarian oocyte release (IOR) were studied in 17, 21 and 24-day-
old rats by morphological methods. Using a light microscope, it was seen that IOR occurred …