In the cubical or unilaminar follicular cells the nucleus became round or elliptic and located on the bottom the number of organelles increased and the structure of organelles became clearer .

单层立方或 柱 状卵泡细胞细胞核开始变圆或椭圆形位于底部，细胞器数最增加，结构变得清晰；

About 2 weeks later a unilaminar cells formed at the bottom of culture flask presenting cluster-shape .

约2周后，细胞培养瓶底可形成一 单层 细胞，呈集簇状生长。