胚胎

The aim of this study was to establish the culture system of isolation and cultiation of the neural stem cells from the embryonic rat brain and spinal cord. The methods of microscopic dissection, cell culture and immunofluorescence cytochemistry were used.

研究采用显微解剖、无血清细胞培养和免疫荧光细胞化学染色等实验技术，成功地建立了胚胎大鼠脑和脊髓神经干细胞的分离和培养方法。

The affected chicks acquired the morphine conditioned place preference more quickly, and maintained it much longer. Experiment 3 showed that during E5-8, injecting delta receptor antagonist naltrindole reversed the learning and memory impairment caused by morphine while delta receptor agonist DPDPE impaired learning and partial memory function. On the other hand, mu opioid receptors had little effect. As for E17-20, given naloxonazine can reverse the increases of susceptibility to morphine, and the mu receptor agonist DAGO cause the increases of susceptibility to morphine. Delta receptors have no effect.

研究结果发现：经过对鸡胚发育不同时间段的吗啡给药，胚胎期发育E5-8阶段给予吗啡的小鸡学习记忆受损最为严重，表现为学习和记忆功能的严重下降；而E17-20时段吗啡给药的小鸡更容易获得吗啡CPP且保持时间更长。E5-8阶段给予delta受体拮抗剂natrindole能够翻转吗啡对学习和记忆的损害作用，并且给予delta受体激动剂DPDPE也损害学习和部分记忆功能，mu受体作用不大。E17-20阶段拮抗mu受体能够抑制成瘾易感性的增加，激动mu受体可以增加小鸡的成瘾易感性，delta受体没有明显作用。

Radiation from X ray also can affect the developing embryo and fetus ,with the most dangerouse time bing the first several weeks after conception,when women do not yet know they are pregnant .it is important for women and their physicians to weigh the risk of an X ray when an actual or potential pregnancy is involvel.

在有了胎儿这个概念的前几个星期，有很多危险的时刻，因为女人们还不知道他们已经怀孕。X射线对于女人和她们的身体有致命的危害。当然也包括胚胎和胎儿在内。

My intuition was based partly upon the fact that embryology in real life can be thought of as recursive, Dawkins told me.

我的直觉部分程度上是建立在这个事实基础之上的，真实生命的胚胎学可以被认为是递归的，道金斯告诉我。

Objective to investigate the effect of mifepristone on the expression of tumor necrosis factor-α and transforming growth factor-βin decidua of early pregnancy.

目的 探讨米非司酮对胚胎生长及蜕膜肿瘤坏死因子-α和转化生长因子-β表达的影响。

Objective: Construct of cDNA expression library of Human decidua and Screen the antigen about the embryo development.

目的：构建人蜕膜组织的cDNA表达文库，筛选蜕膜组织中与胚胎发生有关的抗原。

It is well accepted that neurogenesis in the developing and adult dentate gyrus is regulated, at least in part, by NMDA receptors.

众所周知，胚胎及成熟脑内的神经发生均与NMDA受体的功能状态密切相关。

The second experiment is derivation and cultivation of mouse embryonic stem cells.

实验二是关于小鼠胚胎干细胞的分离培养。

Relating to structures derived from a series of mesodermal somites, including skeletal muscles, bones, and dermis.

来自一系列的中胚叶的体节胚胎之任一节原始椎体，包含骨骼肌，骨头，真皮。

These culture conditions not only maintain the undifferentiated state and normal diploid karyotypes of BALB/c mouse ES cells effectively, but also maintain a series of their characteristics of murine stem cells. two different kinds of digestive methods and Two kinds of digestive juice with different concentrations were designed to dissociate proliferous inner cell mass and ES cell clonies deriver from dissociative ICM.

这一培养条件不但有效地维持了ES细胞的未分化状态和正常二倍体核型，而且维持了其作为多能性胚胎干细胞的一系列特征；实验设计了两种离散方法和两种浓度的消化液，用来离散增殖的ICM和ICM离散后出现的ES集落。

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。