The pyriform lobe cortex pyramidal cells develop very early too and it appears in the inner side, the granular cells beg梨状叶皮质锥体细胞发育的较早，最先出现在深层，颗粒层第18周出现。
Effect of bcl-2 gene and liposome on division and apoptosis of ovarian granular cells in laying hens外源bcl-2基因和脂质体对鸡卵泡颗粒细胞体外分裂和凋亡的影响