精子的

The nature of healthy birth is to seek good-quality sperm and ovum.

优生的本质就是寻求优质的精子和优质的卵子。

So the researchers used methods similar to those used for cloning to create a group of "bi-maternal" female mice from two eggs – eliminating the need for sperm and its cargo of paternally imprinted genes.

因此研究员们使用类似克隆的技术，用两个卵子制造了一批"两个母亲"的雌性小鼠——完全不需精子及其所携带的父方基因。

Renee Reijo Pera, a biologist at Stanford's Institute for Stem Cell Biology and Regenerative Medicine, points out that earlier attempts to create offspring with sperm from embryonic stem cells resulted in short-lived mouse pups that were either giants or midgets.

斯坦福干细胞生物与再生医学研究所的生物学家雷妮·雷霍·派拉指出，以前曾尝试用胚胎干细胞培育的精子来繁殖后代，结果所产生的幼鼠寿命短暂，而且体形不是特大就是特小。

Double fertilization The fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus.

双受精：指花粉粒中的一个精子与胚珠中的卵细胞结合形成受精卵，另一个精核与极核结合形成三倍体的胚乳核。

A miniature, fully formed individual believed by adherents of the early biological theory of preformation to be present in the sperm cell .

雏型人一个微型的，充分成形的个体，早期生物理论预说的拥护者认为它存在于精子细胞中

A m in iature,fully formed in dividual believed by adherents of the early biological theory of preformation to be present in the sperm cell.

雏型人一个微型的，充分成形的个体，早期生物理论预说的拥护者认为它存在于精子细胞中

The results showed, in the early period of hormone treatment, the fraction of seminiferous tubules which dominated by sperm or spermatid appeared to decrease compared with the controls.

结果观察到在实验前期阶段，与对照组相比，处理组中随着所注射激素浓度的增加，生精小管中以精子/精细胞占主要的小管所占的比例呈降低趋势。

Although the age of the patient is advanced, I do not see a mixture of variably differentiated germs cells seen in spermatocytic seminoma.

尽管病人的年龄是提前了，我看不出在精子细胞性精原细胞不同分化的生殖细胞的混合

Results This Differential Extraction Kit is efficient to obtain high quality spermatid and epithelial cell DNA from the mixture samples with different proportion of sperm to epithelial cell.

对所提取的DNA进行定量分析和STR分型。结果该试剂盒能从精子和上皮细胞不同比例的混合斑中提取出高纯度的精细胞和上皮细胞DNA。

The toxicity effect of Aroclor 1254 directly and resulted in the pathological changes of the sexual gland, influenced the nutrient accumulation and maturity division of the spermatocyte , the sphere sperm cell development and sperm maturity.

由于经胎盘及乳汁转运到胎儿和仔鼠的Aroclor 1254的量相对较低，未造成性腺的明显病理变化，使精子形态质量受影响程度明显减小。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。