When the gametes are readily distinguished as male or female , other therms may be used such as antheridium , archiegonum , or oogonium 配子很快地分化为雌性或雄性以后，其他的细胞会形成如精子囊，颈卵器，卵囊等器官。
2.
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。
3.
In fetal gonad , oogonia become to primary oocytes by beginning of the first meiosis , and oocytes will be enclosed by ovarian somatic cells and further form the primordial follicles 在体内，卵原细胞会停止有丝分裂、启动并进入减数分裂而转变为卵母细胞，进而被周围的体细胞包围形成卵泡。
4.
S . oogenesis oogenesis can be devided into four stages : oogonia , provitellogenic oocytes , vitellogenic oocytes and mature egg . the chromatin in oogonia nucleus is in the shape of electron - densed granules 卵子发生卵子发生可分为卵原细胞、卵黄发生前的卵母细胞、卵黄发生的卵母细胞、成熟卵细胞四个阶段。
