ectoderm

1. Ectoderm follows a default pathway.: 外胚层遵循一个默认的路径。

2. Derived from two embryonic germ layers, the ectoderm and the endoderm.: 双胚层的具有两个胚层（外胚层和内胚层）的。

3. 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。

4. In its study, Zhong's team examined human skin cells, which are related to brain and neural cells from the ectoderm.: 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。

5. 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。

6. It is the result of incomplete disjunction of the cutaneous ectoderm from neural ectoderm during the process of neurulation.: 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。

7. Between the ectoderm and endoderm is mesoderm, which forms the muscles, reproductive organs, blood vessels and excretory organs.: 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。

8. 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.: 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。

9. 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。

10. 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。

11. 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.: 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。

12. When an animal develops, embryos form three cellular or germ layers - ectoderm, endoderm and mesoderm - which then go on to form the body's organs and tissues.: 当一个生物产生时，胚胎将形成三个胚层外胚层、内胚层和中胚层，然后再由这些胚层形成机体的组织和器官。

13. 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.: 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、骨骼、泌尿系统及循环系统。

14. 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.: 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、。

15. We discovered that CAM ec on day 8, 10, and 12 after incubation localized beneath the chorionic ectoderm, but with the age growing, ec gradually migrated toward ectoderm from mesenchyme.: 发现鸡胚在第8、10、12天胚龄时CAMEC都位于外胚层绒毛膜上皮之下，随胚龄增大，EC逐渐由中胚层移向外胚层。

16. We discovered that CAM ec on day 8, 10, and 12 after incubation localized beneath the chorionic ectoderm, but with the age growing, ec gradually migrated toward ectoderm from mesenchyme.: 发现鸡胚在第8、10、12天胚龄时CAMEC都位于外胚层绒毛膜上皮之下，随胚龄增大，EC逐渐由中胚层移向外胚层。

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