外胚层的

Epidermal stem cells isolate from embryonic ectoderm, mostly locate on the eminentia of upper hair follicle and stratum of hair-lack regions such as palm.

表皮干细胞来源于胚胎的外胚层，毛囊上半部的隆起处数量众多，在缺乏毛发的手掌等处位于表皮的基地层。

The scientists noted that specialized cells generated from the AFS cells included all three classes of cells found in the deeloping embryo - termed ectoderm, mesoderm, and endoderm.

科学家还发现从羊水衍生的干细胞中生长出来的特定的细胞包含了发育的胚胎的三种细胞类型——外胚层、中胚层和内胚层。

According to NIH team leader Ronald McKay, that means epiblast cells offer scientists a iew of an ES cell just as it's poised to produce mature cell types, including neurons, muscle and bone.

根据美国国家卫生所的研究小组负责人Ronald McKay的说法：这就意味着外胚层细胞给予科学家一种胚胎干细胞全新的观点，那就是他是一种制造成熟细胞类型，其中包括神经，肌肉和骨的一种平衡。

Segmentally arranged neuroectodermal tissue that separates from the neural tube dorsally before it closes.

为神经胚的一部分，起源於原阳胚的外胚层。它是一种短暂的结构，其细胞在神经管闭合前很快的开始分散迁徙。

It is a cell of ectodermal origin that has the specialized function of producing keratin, a complex filamentous protein that not only forms the surface coat of the epidermis but also is the structural protein of hair and nails.

它起源于外胚层，有特殊分化的产生角蛋白的功能，角蛋白是一种复杂的丝状蛋白，不仅能形成表面包膜，而且是毛发和指甲的结构蛋白。

So: in medicine, long teeth should not be a big problem, apart from a very small number of "congenital ectodermal dysplasia," patients with this disease in addition (this is a including hair, fingernails will be bad at the same time development disease, it is not difficult to distinguish), one long tooth generic order speed may have differences, but president of the teeth.

所以：在医学上，长牙齿应该不是很大的问题，除了很少数的「先天性外胚层发育不良」这种病的患者之外（这是一种包括头发、指甲也会同时发育不好的疾病，不难分辨），通用人长牙的次序快慢可能有差别，但是都会长牙的。

Inductive interactions mediated by the Msx genes are essential for normal craniofacial, limb and ectodermal organ morphogenesis, and are also essential to survival in mice, as manifested by the phenotypic abnormalities shown in knockout mice and in humans.

基因敲除鼠和人类的畸形表现型的研究显示，Msx基因介导的诱导组织间的相互作用，对正常颅颌面、肢体和外胚层器官的形态发生至关重要。

Yet in many vertebrate groups, teeth are not restricted only to the oral cavity, but extend posteriorly as pharyngeal teeth that could be derived either directly from the endodermal epithelium, or from the ectodermal epithelium that reached this location through the mouth or through the pharyngeal slits.

但在很多脊椎动物里牙齿的发育不仅只有上述来源，还有向后延伸形成的咽部牙齿，可能由内胚层上皮或经由口腔或口咽裂至此部位的外胚层上皮形成。

Human basic fibroblast growth factor is a single-chain heparin-binding polypeptide. It is a general regulatory mediator for different cells such as endothelial cells and for other cells of mesodermal and neuroectodermal origin, it stimulates cells proliferation, inducing or delaying differentiation.

人碱性成纤维细胞生长因子是一种单链的具有与肝素结合能力的多肽分子，它能够调节内皮细胞及其它来源于中胚层和神经外胚层等多种细胞的生长、分化、迁移和凋亡，同时是一种重要的血管生成因子，因此具有广泛的临床应用价值。

Fibroblast growth factor is a kind of the polypeptide growth factors, which is known to be a mitogen for a wide variety of mesoderm-and neuroectoderm-derived cells and a neurotrophic factor for several neuronal cell types.

成纤维细胞生长因子是一种对中胚层及神经外胚层源的细胞都有促分裂活性的多肽生长因子，也是一种重要的神经营养因子。

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。