精子细胞:是在曲细精管中产生,用于遗传生育的一类细胞。
n. spermoblast ; spermatid
misc. spermatoblast ; spermatoon
The transition protein-1gene(tnp1)have been reported as the round spermatid-specific marker gene.
过渡蛋白1基因(tnp1)是圆形精子细胞特异表达的基因。
参考来源 - 蒙古绵羊tnp1基因cDNA全编码区的克隆及序列分析·2,447,543篇论文数据,部分数据来源于NoteExpress
Now, the top is different from the bottom because the sperm came in this side physically and not the other side.
现在,细胞上半部分和下半部分不同了,因为精子如果从一边进入卵子,就不会再从另一边进入了
The other germ line cell is the sperm cell.
另一种生殖细胞是精子细胞
The sperm - say this is the one sperm cell that's able to inject its DNA into the egg, well then this cell has a polarity.
假设某个精子细胞,成功向卵子注入了自己的DNA,那这个细胞就有了极性
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