外胚层的

Result The symptoms of congenital oligodontia were clinically classified into two groups: oligodontia with or without systemic syndromes. And the former has two typical kinds of diseases: anhidrotic/hypohidrotic ectodermal dysplasia and Rieger syndrome.

结果 多个牙先天缺失在临床有不同表现：一是合并发育缺陷综合征的先天多个牙缺失，典型病例为无汗少汗型外胚层发育不全和Rieger综合征等，二是作为独立症状出现的先天多个牙缺失。

I report here that maternal gene xNorrin, a homologue of Norrie Disease gene, is expressed in animal pole and enriched in dorsal blastomeres of early embryos.

爪蟾背部动物极的一部分细胞将发育成神经外胚层，而母源xNorrin mRNA正是富集在卵母细胞和早期胚胎的动物极半球。

From these studies, we propose that local antagonism of Wnt activity within the anterior ectoderm is required to establish the telencephalon.

根据这些研究，我们提出，Wnt在前外胚层活动的局部拮抗对建立前脑胞来说是必要的。

In mammals, the primitive ectoderm is an epithelium of polarized cells that differentiates into all embryonic tissues.

事实上，我们的生命开始于一个细胞团，但在24小时内，一些细胞死去，而另一些形成一个空心的细胞球，这就是原始外胚层。

The differentiation and fusion of cells may be therefore the two essential ways for the BMDSCs to change their phenotypes from mesoderm to ectoderm.

细胞转分化和细胞融合有可能是中胚层来源的BMDSCs向神经外胚层细胞变化的两种必要机制。

Chd protein is able to dorsalize mesoderm and to neuralize ectoderm in Xenopus gastrula explants at 1 nM.

Chd蛋白质可以使中胚叶背部化，也可以背化1海哩的爪蟾肠胚外植体里面的外胚层。

Unexpectly, overexpression of xNorrin can induce neural formation in the ectoderm cells independent of canonical Wnt signaling pathway.

此外，在外胚层中过量表达xNorrin可以激活神经标记基因的表达，更为重要的是这种激活并不依赖于经典Wnt信号通路，提示xNorrin还可能通过其它机制起作用。

In vitro, ES cells can spontaneously differentiate into embryoid bodies containing derivatives of three germ layers.

在体外，ES细胞可自发分化为含有内胚层、中胚层、外胚层来源的多种组织和细胞的拟胚体。

Objective:To investigate the clinical,histomorphological and immunohistochemi-cal features in primitive neuroectodermal tumor.

目的：探讨外周原始神经外胚层肿瘤的临床表现，病理及免疫组织化学特点及预后。

Here, using transgenic axolotls with a combination of fate-mapping approaches, we present reliable evidence of oral teeth derived from both the ectoderm and endoderm and, moreover, demonstrate teeth with a mixed ecto/endodermal origin.

我们利用转基因蝾螈和&命运作图&技术证明牙齿可分别来源于外胚层和中胚层，或者早期的两者混合组织。

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。