精子形成

Also the disomy of autosome is a little higher than gonosome, but there was no significant statistical difference among these values. In diploidy, as the frequencies ranged from 0.035% to 0.083%, heterogeneity was also not obvious.

同时在实验中观察到二体率比二倍率要高的情况，这可能意味着在精子形成的减数分裂过程中，二体更易形成。

These data implicate a important role for Pem during embryogenesis and in sperm development.

这些资料表明Pem可能在胚胎发育和精子形成过程中充当着重要的角色。

It contain a kind of special protein in the loach, have already promoted the sperm become a function.

泥鳅中含一种特殊蛋白质，有促进精子形成作用。

There were more Ca〓 deposite granules in and around the condensing granules of nucleoplasm; 2 There were large amount of Ca〓 in the Golgi complex of spermatid in Golgi phase. The Ca〓 in the acrosomal vesicle were probably from the Golgi complex; 3 Ca〓 was probably concerned with adherence of the acrosomal vesicle to the nuclear membrane.

发现（1）。Ca〓与精子形成过程中染色质的致密化有关，圆形精子细胞局部致密化的染色质团块周围及其内部和长形精子处于的致密化过程的核内均具有较多的Ca〓；（2）。

Results Some spermatocytes all in model and clomiphere groups were denatured or death and spermatid did not develop.

结果：实验对照组的曲细精管上皮中多数精母细胞变性、死亡，精子细胞不发育，无精子形成，管腔中无精子，支持细胞有明显病变。

The results show that spermatogenesis occurs during April through August and spermiogenesis occurs from July to August.

结果显示，北方山溪鲵在4~8月时处于精子发生期，精子形成在7~8月。

The mechanisms responsible for spermiogenesis are poorly understood.

这一过程叫做精子形成。目前，关于精子形成的机制，人们还知之甚少。

The immunostianing of ghrelin was not observed in Leydig cells after the impairment. Conclusion The changes in the expression of ghrelin suggest that ghrelin may play an important role in the function regulation of testis and the process of spermatogenesis and spermiogenesis.

结论Ghrelin在小鼠正常及辐射损伤睾丸中的特异性表达和变化，提示其可能与睾丸精子发生、精子形成及辐射损伤修复有关，具有重要的睾丸生物学调节功能。

A nucleus central channel was present along the nuclear longitudinal axis during spermiogenesis.

精子形成期间，核中央位置形成贯穿整个核的中央通道，并在核底部形成植入窝，中心粒位于其中。

The expression of specific genes in sex chromosomes is the basis of sexspecific membrane protein in mammalian spermatozoa.

在精子形成过程中，存在性染色体特异基因的表达，这是X、Y精子膜蛋白差异形成的基础。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。