A sperm cell develops from a sperm mother cell. 精細胞從精母細胞發育而成。
Some of the spermatogenic cells were displaying a state of delaying or degeneratingcompared with other spermatogenic cells of the same kind in their vicinity. 可見到曲細精管中個別區域的生精細胞與周圍同類細胞發育不同步,有延遲或退化現象。