胚胎发育

Seeds is the most economic index of peanut Arachis hypogaea L.

胚胎早期发育是花生产量和品质形成的重要时期，其幼胚发育的正常与否直接关系到以种子为经济指标的花生生产的效益。

It provides numerous links to developmental biology research resources, including dynamic development, axolotl colony, genetic and molecular data for drosophila, mouse embryo and cancer genome etc.

该网页提供众多关于发育生物学研究的资源链接，包括动态发育，蝾螈种群，果蝇的遗传和分子数据，小鼠胚胎以及癌症基因组等等。

Defined as a spectacular postembryonic larva-to-adult transition, it shows a wide morphological diversity between the different chordate lineages, suggesting that it might have appeared several times independently.

在脊索动物的胚胎后发育过程中，不同的谱系中从幼体到成体存在广泛的变态发育，这种现象提示我们，这种形态学上的多样性有可能是通过独立发生的过程而产生的。

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。

Embryoid stem cells are kinds of cell groups which are self-produce and differentiated into multi-oriental cell types.

在胚胎的发生发育中，单个受精卵可以分裂发育为多细胞的组织和器官。

They also indicate that the in itro system using mouse ES cells mimics in io deelopment and should proe useful in the study of molecular mechanisms for endoderm and gut deelopment.

这些结果也显示了利用小鼠胚胎干细胞的体外系统模拟了体内的发育过程，而且对研究内胚层和肠道发育的分子机制是很有用的。

We found that TN-C was abundant in the early heart development of rats, it was suggested that TN-C reference to the early heart morphogenesis; TN-X was poorly expressed in epicardium in hearts of ED11.5, implied it may have something to do with the formation of the coronary artery.

TN-C在大鼠胚胎心脏发育早期表达丰富，对心脏的早期发育有一定关系；而TN-X在ED11.5于形成血管的心外膜细胞周围表达，提示TN-X可能与心脏早期冠脉等血管的形成有关。

The journal scope covers gametogenesis, fertilization, early embryonic development, embryo-uterus interaction, reproductive development, pregnancy, uterine biology, endocrinology of reproduction, control of reproduction, reproductive immunology, neuroendocrinology, and veterinary and human reproductive medicine.

杂志内容覆盖配子发生，受精，胚胎早期发育，胚-子宫相互作用，生殖发育，妊娠，子宫生物学，生殖的内分泌学，生殖控制，生殖免疫学，神经内分泌学，以及脊椎动物和人类生殖医学。

The second of the three excretory organs that develop in a vertebrate embryo,becoming the functioning kidney in fish and amphibians but replaced by the metanephros in higher vertebrate s.

中肾在脊椎动物胚胎内发育而成的三对排泄器官中的第二对，作为功能肾存在于鱼类和两栖类体内，但在更高级的脊椎动物中则发育成后肾

The reproductive toxicity of Aroclor 1254 on the oogenesis, the fertilization and preimplantion embryonic in vivo in female mice, the spermatogenesis toxicity, the sperma fertilizing ability and the zygote developmental toxicity in vivo in male mice were studied, and the toxicity mechanism were discussed by histopathological examination of the ovary, the uterus, the testis and epididymides.

以小鼠为动物模型，研究了类二噁英多氯联苯的典型代表物质——Aroclor 1254对母鼠卵子发生、受精和附植前胚胎体内发育毒性，公鼠精子发生毒性，以及对精子受精能力和受精卵体内发育的毒性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。