embryonic development

Compared with that of common carp under the same conditions, the embryonic development period delayed by 18~ 20 hours and that the time for bladder aired delayed by 38~ 40 hours.

同样温度条件下与鲤鱼的胚胎发育相比，出膜时间约推迟18～20h，鳔开始充气进入混合营养期约推迟38～40h。

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Mammalian primordial germ cells form and migrate to the gonad during embryonic development.

在胚胎发育时期,原始生殖细胞形成并迁移至生殖腺,形成种系囊.

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The authors discussion the staging parameters of embryonic development, the forming of gastrulation, "ammon tail fold" and "posterior amnion tube" and the forward movement of the embryo itself.

并就乌龟发育分期的标准，原肠胚的形成，羊膜尾褶和后羊膜管，早期胚胎的自身运动等问题进行了讨论。

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However, it remains unclear how the Nodal signaling is controlled precisely during embryonic development.

然而, 在胚胎发育中Nodal信号的强度是如何受到精确调控的,目前尚知道的不多.

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The G-PAGE was used to analyze the proteinase activity of Rana nigromaculata during early embryonic development. The results showed that: ① Before tail bud stage, there was almost no proteinase activity;

本文采用活性电泳方法，对黑斑蛙（Rana nigromaculata）早期胚胎发育过程中蛋白酶活性进行了研究.结果如下：尾芽期以前未检测到蛋白酶活性；

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Germination inhibitor may inhibIt'seed embryonic development; it would not relate to physiological after-ripening.

萌发抑制物的存在可能抑制了种胚发育, 而与生理学后熟过程无关.

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And divided the embryonic development into four main stages: Cleavage, the formation of archenteron notochord and coelomic mesoderm, the formation of embryonic membranes and the organo-genesis;

将胚胎发育主要分为4个时期：卵裂期、原肠脊索与体腔中胚层形成期、胎膜形成期和器官发生期；

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Structure and early embryonic development of inner ear of Alligator sinensis

扬子鳄内耳的组织结构及其早期胚胎发育

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VEGF is essential for embryonic development, endochondral bone formation, female reproductive functions.

VEGF也是胚胎发育 、 软骨内骨形成 、 女性生殖系统、以及肿瘤和眼球内血管新生所必需的.

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Studies were carried out on Embryonic development, point of no return ( PNR), Oxygen consumption rate, suffocation point and the acute toxicity of five kinds of commonly-used aquacultural drugs to Pseudobagrus ussuriensis through breeding biology angle.

本文从养殖生物学角度出发，研究了乌苏里拟鲿的胚胎发育、不可逆点、耗氧率与窒息点以及对5种常见渔药的敏感性。

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Embryonic development seems to be controlled principally by a very small number of master genes.

胚胎发育似乎主要受制于少数主导基因。

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With the rapid development of epigenetic research, it has been recognized that epigenetic regulation plays key role in the process of embryonic development, cell differentiation, and disease.

随着表观遗传学的飞速发展，人们已经认识到表观遗传调控在发育分化与疾病发生中起着重要的作用。

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From fertilized eggs to newly hatched larvae, can be divided into 4 main stages; including cleavage stage, blastula stage, gastrula stage and formation of embryo stage, total 22 embryonic development stages.

从受精卵到仔鱼出膜可分为卵裂期、囊胚期、原肠期、胚体形成期4个主要阶段，22个发育时期。

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Cytological observations on fertilization and early embryonic development in Ruditapes philippinarum

菲律宾蛤仔受精及早期胚胎发育过程的细胞学观察

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While iPS cells may be even further from commercialisation than embryonic stem cells as direct therapy for patients, there are more immediate applications for pluripotent cells in research and development.

虽然与胚胎干细胞相比，诱导多能性细胞距直接用于病人治疗的商业化更为遥远，但诱导多能性细胞在研究和开发中却有更直接的应用。

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The timing was largely in line with embryonic development on Earth, he added.

段恩奎补充说道，这和地面上的胚胎发育时间基本一致。

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Embryonic development of the dorsal skin of Crocodylus prosus

澳大利亚产湾鳄（Crocodylus prosus）背部皮肤的胚胎发生

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Method This study is aimed at the technical treatment with chemical, physical and hormone factors during tail bud period in the process of embryonic development.

方法本研究在中国林蛙胚胎发育的尾芽期，用化学、物理和激素因子进行技术处理。

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Homeobox gene is a sort of regulatory gene which controls embryonic development and cellular differentiation.

同源框基因是一类控制胚胎发育和细胞分化的调节基因.

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Each layer gives rise to specific tissues embryonic development.

每个胚层产生特殊的胚胎组织.

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The velocity of the embryonic development is accelerated as thetemperature, at 20-33℃, is increased.

在适宜温度范围内,随着温度的升高,胚胎发育速度加快,在水温30℃时, 胚胎发育的速度比在20℃时快一倍.

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Chordates are bilaterally symmetrical, triploblastic segmented coelomates which demonstrate a deuterostomic pattern of early embryonic development.

脊索动物两侧对称 、 胚层,分节的体腔,在胚胎发育的早期过程中,显示为后口类型.

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Animal cells lose their totipotency at an early stage in embryonic development.

动物细胞在胚胎发育的较早阶段便失去了其全能性.

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Embryonic development is a very complicated and coordinated physiological process.

胚胎发育是非常复杂而且变化极为协调的生理过程.

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Embryonic chicken is a good model for the study on the embryo development for vertebrates.

鸡胚是脊椎动物胚体发育研究的主要模式材料，在发育生物学研究中具有较高的地位。

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Embryo bisection is a powerful means in the study of cell differentiation, early embryonic development and the totipotency of embryo cell.

胚胎分割是研究细胞分化、早期胚胎发育、胚胎细胞全能性的有力手段。

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According to embryonic development time, microscope observation, collecting eggs at different stages.

根据胚胎发育时间，镜检观察、采集不同时期受精卵。

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In order to explore the effects of drinking alcohol during pregnancy on embryonic development and its mechanism, a post implantation whole embryo culture ( WEC) technique was used.

为探讨孕期饮酒对胚胎生长发育的影响，应用植入后全胚胎培养（whole embryo culture，WEC）进行研究。

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Observation on the embryonic development of Clarias fuscus

胡子鲇胚胎发育的观察

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But so far there have been few studies investigating the role of DNA damage and repair system or cell cycle checkpoint signal pathways in embryonic development.

目前胚胎发育过程中损伤修复系统以及细胞周期检查点系统的研究不多，确切作用机制尚不清楚。

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