胚胎

The cells of blastomere randomly distributed either embryonic parts or extraembryonic parts of blastocyst.

2-细胞胚胎卵裂球随机分布在囊胚的胚胎部分和胚外部分。

Blastomere numbers and morphology scores were highest in group Ⅰ(P.05), but no significant differences existed between group Ⅱ and group Ⅲ.

组的胚胎卵裂球数目及胚胎形态评分均显著优于Ⅱ组及Ⅲ组(P.05)；Ⅱ组与Ⅲ组相比差异无统计学意义。

Early embryonic cell has the developmental totipotency. Every embryonic blastomere cell can develop to an intact individual separately in a proper condition.

早期胚胎卵裂球细胞具有发育全能性，每个胚胎卵裂球细胞在适宜的条件下都能单独发育为一个完整的个体。

The mitotic error rate in cleavage stage embryos was proven to be higher than the meiotic aneuploidy rate and as a consequence, the genome of a single blastomere is not representative for the genome of the other cells of the embryo.

在卵裂期胚胎这种有丝分裂的错误率被证明是高于减数分裂的非整倍体错误率，因此，单个卵裂球的基因不能代表其他胚胎细胞的基因组。

One embryonic cell can be separated into many blastomere cells. As be the nuclear donor of the embryonic cell nuclear transfer, it can breed the number of eminent species largely, increase the number of endangered animals, supply large number of supply same genotype animals, improve the efficiency of gene transfer and sex control and offer same genotype apparatus or organ for human transplant.

一个早期胚胎细胞可以分离多个卵裂球，以此作为核供体进行胚胎细胞核移植，可以大量扩繁优良品种的数量，增加濒危动物的数量，为科学研究提供大量遗传同质的动物，提高转基因和性别控制技术的效率，提供基因型相同的器官或组织供人类移植。

Use of a "cloning" procedure known as "artifical twinning" or "blastomere splitting" to create several genetically identical embryos from one, so long as the resulting embryos are experimented on and discarded instead of being transferred to the womb.

使用"克隆"程序称为"人工配对"或"卵裂球分裂"制造基因相同的胚胎数由一、只要是试行并导致胚胎被丢弃而不移送的子宫。

Microbiopsy of pre-embryos with 4 or 8-cells did not alter their viability and further development. The technique of nested PCR on a single blastomere for the detection of cystic fibrosis ΔF508 mutation is reliable.

在小鼠胚胎4 细胞或8细胞阶段实施单个卵裂球显微活检，不影响胚胎的进一步分化以及小鼠出生后正常生长发育；利用显微活检得到的单个卵裂球进行突变基因诊断是可行的。

The fourth milestone was in the embryonic stage of development . Vertebrates and echinoderms began to develop differentiated mouth structures from secondary openings off the blastopore ( an initial opening in the embryonic cavity ).

第四个重要事件出现动物的胚胎发育期，脊椎动物和棘皮动物开始在胚孔（即动物早期胚胎原肠的开口）相对的一端另行开口，并最终发育为成体的口。

The colony of embryonic stem cell separated from blastula could gain five strains of embryonic stem cell and go down to posterity F7 in vitro.

从培养的囊胚中分离获得的类胚胎干细胞集落，经传代培养获得了5株胚胎干细胞株，在体外可传代培养到7代，冷冻保存复苏后，干细胞仍能存活、增殖。

AIM:Studies on totipotential stem cells using primordial germ cells have the same application prospect as embryonic stem cells, especially for the animals difficult to isolate embryonic stem cells from blastula.

目的：应用原始生殖细胞进行全能干细胞的研究具有与胚胎干细胞同样广阔的前景，尤其适合于难以从囊胚内细胞团中分离培养胚胎干细胞的动物。

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。