Table 2 Ultrastructural changes in IVG mouse ovarian follicles cultured with or without FSH (100 mIU/ml) for 6 days
From: Ultrastructure of isolated mouse ovarian follicles cultured in vitro
Group | N° | Shape |  |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Oocyte | Granulosa | Theca | ||||
|  |  |  | Organelle distribution | Oolemma | Zona Pellucida | N° and arrangement of layers | Transzonal processes* | Signs of degeneration | N° of layers |
FCS | 20 | Rounded | Juxta-nuclear | Microvilli +/- | Intact | 4-5 Compact | ++ | Present in 40% of samples | 1-2 |
FSH ANTRAL | 20 | Rounded | Scattered | Microvilli + | Intact | 6-8 Cell loosening, with fluid-filled intercellular spaces Innermost layer discontinuous | +/- | Present in 10% of samples | 1-2 |
FSH NON- ANTRAL | 20 | Rounded | Scattered | Microvilli +/- | Intact | 6-8 Compact | + | Present in 40% of samples | 1-2 |