胚胎发育

We think that centrin play an important role in meiosis during Urechis unicinctus sperm metamorphosis difference and we also think that centrin may be related to trochophore cilia and sperm tail formation,and reconstraction of centrosome after fertilization.

我们推测Centrin在单环刺螠精子发生过程中减数分裂或精子细胞变态分化过程中发挥作用；在单环刺螠早期胚胎发育中，Centrin可能与受精后中心体的重建及担轮幼虫的纤毛形成有关。

Cases were considered as heterozygous if PCR amplification of undigested DNA showed two major bands with equal intensity. Cases with only one major band were homozygous for HUMARA and thus uninformative.

2·讨论一、克隆状态分析与HUMARA分析在胚胎发育早期，女性体细胞的两条X染色体中，随机地有一条发生失活，因此正常女性组织的X染色体失活方式为随机性。

Apoptosis plays a very important role in the development of the vertebrate embryo.

细胞凋亡是细胞在基因调控下发生的主动消亡过程，在脊椎动物胚胎发育过程中非常重要。

Strepsiptera are very specialized insects which carry out a unique type of viviparity with egg formation and embryonic development taking place within haemocoel of the female.

中文摘要：捻翅目昆虫是胎生的，胚胎发育和孵化均在母体血腔内进行。

Until about three months in the womb, baby sharks feed off a yolk sac.

胚胎发育的前三个月，柠檬鲨宝宝是由一个卵黄囊来提供养分的。

Amoeboid chemotaxis plays a pivotal role in many physiological or pathological processes, including embryogenesis, inflammation, and tumor metastasis.

阿米巴式趋化运动在许多生理及病理过程中，例如胚胎发育、发炎反应、及癌症转移，扮演枢纽的角色。

Microscopical on the early embryonic developmgnt of Andrias davidianus .

大鲵胚胎发育的显微观察。信阳师范学院学

Olaquindox,arsanilic acid,and oxytetracycline are three common kinds of veterinary drugs and feed additives.

采用斑马鱼、鲤鱼作为生物材料，通过斑马鱼急性毒性试验、胚胎发育试验和鲤鱼肾细胞单细胞凝胶电泳试验，分别从生物个体水平、细胞水平和分子水平，对兽药及饲料添加剂喹乙醇、阿散酸和土霉素进行了生态毒理学效应研究。

The pathology study showed there are several basophilic granule separated in the opacity area, which suggested the change may happen in certain period during the embryo development.

在混浊的相应部位有散在嗜碱颗粒的组织学改变，明确为胚胎发育某一时期的病变，推测与代谢有关。

This paper describes megasporogenesis, megagametogenesis, and the process of embryonic development of the female inflorescence in 20-year-old Betula platyphylla.

以20年生白桦的雌花序为材料，研究了白桦的大孢子发生、雌配子体形成和胚胎发育过程。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。