外胚层遵循一个默认的路径。
它由星形细胞瘤，少突胶质细胞瘤，室管膜瘤发展而来，它们是由神经外胚层细胞诱导的。
It developed from astrocytoma, oligodendroglioma, ependymoma, which were induced by neural ectoblast.
发育8天后，老鼠早期胚胎的，外胚层开始增厚。
This surface layer thickens at an early stage in a mouse after 8 days of development.
双胚层的具有两个胚层（外胚层和内胚层）的。
Derived from two embryonic germ layers, the ectoderm and the endoderm.
在外胚层的凹陷和增厚过程中,表达了很多基因。
there are many genes that are already expressed and presented in this dimpling and thickening of the outer layer.
芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
The little tadpole about the size of a sesame seed is now made up of three layers: the ectoderm mesoderm and endoderm.
芝麻籽大小的小蝌蚪现在已经分成了三层：外胚层、中胚层和内胚层。
The little tadpole, about the size of a sesame seed, is now made up of three layers: the ectoderm, mesoderm and endoderm.
目的：检测无汗性外胚层发育不全患者的EDA基因的突变。
Objetive: to detect the gene mutation of a patient with anhidrotic ectodermal dysplasia.
大家知道，耳朵发育的早期特征，是胚胎外层膜的增厚，这层膜也叫外胚层。
We can see the early signs of ear development Start with the thickening of the outer layer of the embryo, this layer is called the ectoderm.
内耳是调节听力和平衡的器官，来源于外胚层邻近后脑的生长板。
The inner ear, which mediates hearing and equilibrium, develops from an ectodermal placode located adjacent to the developing hindbrain.
这是在神经胚形成期，皮肤外胚层从神经外胚层分离不完全所致。
It is the result of incomplete disjunction of the cutaneous ectoderm from neural ectoderm during the process of neurulation.
神经内分泌肿瘤是指具有分泌颗粒细胞的肿瘤，起源于神经外胚层。
Neuroendocrine tumours are tumours of cells which possess secretory granules and originate from the neuroectoderm.
神经内分泌肿瘤是指携带分泌颗粒的细胞肿瘤，起源于神经外胚层。
Neuroendocrine tumours are tumours of cells, which possess secretory granules and originate from the neuroectoderm.
结果：(1)骨原始神经外胚层肿瘤来源于神经嵴的胚胎迁移细胞。
Results: (1) Osseous PNET originated from embryonic migrating cells of neural crest.
目的探讨原始神经外胚层瘤（PNET）的病理学特点及其临床意义。
Objective To study the pathological characteristics of primitive neuroectodermal tumor(PNET) of bone and soft tissue.
在外胚层和内胚层之间是中胚层，它形成肌肉、生殖腺、血管和排泄器官。
Between the ectoderm and endoderm is mesoderm, which forms the muscles, reproductive organs, blood vessels and excretory organs.
结果肿瘤含有横纹肌样细胞、原始神经外胚层、上皮及间叶多向分化成分。
Results The tumor containing rhabdoid cells, variable components of primitive neuroectodermal, epithelial and mesenchymal components.
中胚层中间胚芽层，位于外胚层和内胚层之间，最终发育成结缔组织、肌肉、。
The middle embryonic germ layer, lying between the ectoderm and the endoderm, from which connective tissue, muscle, bone, and the urogenital and circulatory systems develop.
室管膜囊肿被认为起源于神经外胚层的内陷，囊肿覆盖以柱状和立方上皮细胞。
Ependymal cysts are thought to originate from invagination of neuroectoderm, and the cysts are lined with either cuboid or columnar epithelium.
结果提示：视网膜母细胞瘤来源于神经外胚层上皮，向神经元和光感受器方向分化。
The results suggested that retinoblastoma originated from the retinoblast with potential of differentiation into photoreceptors and neurons.
残留细胞注射部位形成畸胎瘤，瘤体组织中存在成熟的内胚层、中胚层和外胚层组织。
The residual cells were able to form teratoma at the injection site, and mature endoderm, mesoderm and ectoderm tissues could be found in teratoma tissues.
在最新研究中，钟江团队使用的人体皮肤细胞则同由外胚层形成的大脑和神经细胞有关。
In its study, Zhong's team examined human skin cells, which are related to brain and neural cells from the ectoderm.
目的探讨幕上原始神经外胚层肿瘤的临床特点、影像学特征、综合治疗方法及对预后影响。
Objective To analyze the clinical features, neuroimaging presentations, and treatment and prognosis of supratentorial primitive neuroectodemal tumors.
在外胚层，神经管正在形成，在此基础上，婴儿的神经系统——大脑、脊髓、皮肤和毛发——将会形成。
In the outer layer (ectoderm) the neural tube is forming from which the baby's nervous system-brain spinal cord skin and hair-will develop.
在外胚层，神经管正在形成，在此基础上，婴儿的神经系统——大脑、脊髓、皮肤和毛发——将会形成。
In the outer layer (ectoderm) the neural tube is forming, from which the baby's nervous system-brain, spinal cord, skin and hair-will develop.
材料与方法：对2例骨原始神经外胚层肿瘤的临床表现、影像特征进行描述，并结合文献分析。
Materials and Methods: The clinical findings and the imaging features of 2 cases with osseous PNEI were described and analyzed.
结果正常同窝鼠，胎龄13天（ED13）来源于外胚层神经嵴的神经母细胞迁移并进驻胃壁；
Results In normal littermates, the precursor cells from the neural crest migrated into stomach at ED13.
在脊椎动物胚胎的早期发育中，多种信号途径对中胚层形成和神经外胚层分化起着重要的调节作用。
Many signaling pathways play important roles in the formation of mesoderm and patterning of the neuroectoderm during early development of vertebrate embryos.
在脊椎动物胚胎的早期发育中，多种信号途径对中胚层形成和神经外胚层分化起着重要的调节作用。
Many signaling pathways play important roles in the formation of mesoderm and patterning of the neuroectoderm during early development of vertebrate embryos.
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