In the first phase, the oogonium has little cytoplasm and bigger nuclear-cytoplasmic ratio.

第1时相，卵原细胞细胞质较少，核质比较大。

The proliferative phase of the oogonium was found in the gestational age between 41d and 84d.

卵原细胞增殖期为41-84天胎龄间，而增殖高峰在41-48天间出现。

A group of cells at the tip of the oogonium in certain green algae (Chlorophyta), such as the stonewort Chara and the mermaid's cup (Acetabularia).

2某些绿色藻类（绿藻门）中颈卵器顶部的一组细胞，例如轮藻属和伞藻属的冠细胞。