| Type | MGI:General | Description | best grown oocytes from 3-week-old females are smaller in diameter, contain a germinal vesicle (GV) with unclear boundaries and aggregate dark cytoplasmic granules oocyte transition from the nonsurrounded nucleolus (NSN) to surrounded nucleolus (SN) type is inhibited; oocyte development is arrested in the NSN chromatin configuration, indicating impaired nucleolar maturation |
