The ensuing gene expression profile in the cleavage-stage embryo establishes totipotency and is required for further development.
随后卵裂时期胚胎的基因表达模式将建立一种全能性，这对进一步发育是必需的。
Under the microscope, the same stage embryos, rate of attachment and proliferation in embryo, A-class is higher than the B-class.
而且同阶段胚胎，显微镜下观察，A级胚胎的贴壁率和增殖率都高于B级胚胎的贴壁率和增殖率。
Nearly a century ago, biologists found that if they separated an invertebrate animal embryo into two parts at an early stage of its life, it would survive and develop as two normal embryos.
近一个世纪前，生物学家发现，如果他们在无脊椎动物胚胎生命的早期阶段将其分成两部分，它会存活下来并发育成两个正常的胚胎。
Your baby has left the embryo stage and is now a fetus.
婴儿现在已经脱离了胚胎阶段进入了胎儿期。
In the embryo stage, chickens actually have a tail, which disappears before the bird hatches.
事实上小鸡在胚胎期是有长尾的，不过在孵化之前就消失了。
Enzymic protein content decreases from the maximum at early phase of proembryo stage (20.83%) to the minimum at young embryo (4.9%).
酶蛋白的最大含量在原胚阶段初为20.83%，以后至幼胚阶段急剧减少到4.9%。
Such experiments are controversial because when cells are extracted from an early-stage human embryo, it destroys the embryo, which some people believe is equivalent to taking a life.
人造胚胎实验一直备受争议，因为从一个早期胚胎中提取干细胞后，胚胎就会被摧毁，一些人认为这等同于扼杀生命。
The effect of feeder cell type, growth factors, and embryo developmental stage on establishment of sheep embryonic stem cell was also studied in present experiment.
同时，比较了饲养层细胞类型、生长因子、胚胎发育阶段等因素对绵羊胚胎干细胞分离培养效果的影响。
Parents should be allowed to change the genetic profile of their child in the embryo stage, even if the child has no genetic diseases.
父母有权改变处于胚胎阶段的子女的基因，即使他们并没有遗传病。
This is due to the presence of relatively large amounts of blood present in the embryo during this stage.
这是因为此阶段有相对大量的血出现在胚胎中。
Protein grains were stored in endosperm cells at early stage of globular embryo.
在球形胚前期，胚乳细胞中已积累大量的蛋白质颗粒。
The sensitive period was at late stage during the embryo development.
雌蚕高温干燥条件的敏感性，主要发生在胚胎发育至后期阶段。
Up to now, human embryonic stem cells have been derived at a later stage of development when the embryo consists of about 150 cells.
到目前为止，人类胚胎干细胞都来自于发育比较晚的的阶段，那个时候胚胎大约有150个细胞。
The composing of embryo proteins and rule of gene sequential expression at protein level can be discussed by researching the proteins of every embryo development stage of silkworm.
通过家蚕各个时期胚胎蛋白质的研究，可以从蛋白质水平探讨胚胎蛋白质的构成和基因顺序表达的规律。
The free cell wall formation occurs first in the micropylar end when the embryo is 4-6 celled stage, then to the chalazal end and the center.
当胚发育到4—6个细胞时，在胚囊珠孔瑞的游离核之间先形成细胞壁。细胞壁的形成是以自由壁的方式从珠孔端到合点端自外向内进行。
People can bisect the embryo at different stage by different bisection method.
采用不同的分割方法可对不同时期的胚胎进行分割。
Embryo is the initial stage in a natural person's life that could not be surpassed by anybody.
胎儿作为自然人生命的初始阶段，是任何人都无法逾越的。
The suspensor is developed fully at the stage of globular embryo and consists of 3 cells, which are degenerated later.
胚柄在球形胚时期最发达，但胚柄短小，只由3个扁平细胞组成，之后逐渐退化。
Therefore, the embryo dormancy is acquired in late stage of seed development.
因此，胚休眠主要在发育后期获得。
Methods Embryonic to aged stage murine embryo and brain sections were stained by whole-mount in situ hybridization technique.
方法采用胚胎期至老年期小鼠全胚胎及脑切片的原位杂交染色。
There were only two layers of nucellus which had abundant cytoplasm and reserved substance, and were consumed at the stage of late heart-shaped embryo.
珠心细胞只有两层，细胞核大，胞质丰富，内含贮藏物质，至心形胚期逐渐解体。
Conclusions The sequential culture system was beneficial for mouse embryo development and differentiation from early embryo stage to blastocyst stage.
结论序列培养系统有利于鼠胚从早期胚胎向囊胚的进一步发育和分化。
Comparative observation with light microscopy and scanning electron microscopy shows: the hatching gland occurs at stage of embryo development.
观察结果表明，胚胎发育期有孵化腺发生。
At ellipsoidal embryo stage, the chromatin and nucleoli disappear and some cytoplasm enters the nucleus.
在椭形胚期，宿存助细胞核内的染色质及核仁消失，有细胞质侵入核内。
Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.
目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
Objective To investigate the relationship between the first polar body morphology of oocyte and the zygote morphology in pronucleus stage, embryo quality in cleavage stage.
目的探讨卵细胞第一极体形态与原核期受精卵形态、卵裂期胚胎质量的关系。
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