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1·The spermatid differentiation can be divided into five stages.

精细胞的分化可分为五个时期。

2·Early spermatid was oval in shape, with a big and round nucleus;

早期精细胞呈椭圆形，细胞核大而且圆，核膜不规则，多呈锯齿状；

3·The secondary spermatocytes become the spermatid quickly by short time development.

次级精母细胞经短暂的发育过程很快形成精细胞。

4·Following the spermatid elongation, the shape of CA is progressively transformed and extended.

随着精细胞的延长，CA的形状也跟着转变和伸长。

5·The disappearing of the centriolar adjunct and proximal centriole in succession might be considered as a sign of being mature completely of the spermatid.

中心粒附属物和近端中心粒的相继消失可以看作是成熟的最后标志。