| Name: | oocyte stage IV |
|---|---|
| Synonyms: | mature oocytes, oocytes stage IV, postvitellogenic oocyte, Stage 4 oocyte |
| Definition: | Oocyte part of stage IV ovarian follicle. Stage IV oocytes are large and filled with noncrystalline yolky bodies. |
| Ontology: | Anatomy Ontology [ZFA:0001568] |
| Name: | germinal vesicle |
|---|---|
| Synonyms: | primary oocyte nucleus |
| Definition: | The enlarged, fluid filled nucleus of a primary oocyte, the development of which is suspended in prophase I of the first meiotic division between embryohood and sexual maturity. |
| Ontology: | GO: Cellular Component [GO:0042585] QuickGO AmiGO |