Objective to explore the optimal condition of direct differentiation into dopaminergic neurons of embryonic stem cells in serum-free and feeder layer cell free medium.
目的寻求无血清、无饲养层细胞存在的情况下，胚胎干细胞向多巴胺能神经元定向诱导分化的最佳条件。
Objective: To establish feeder layer culture system of ICR mouse embryonic fibroblast (MEF) cells for isolation and culturing of embryonic stem (es) cells.
目的：建立ICR小鼠胚胎成纤维细胞饲养层培养体系，用于胚胎干细胞建系及研究。
Objective To establish the culture system of human embryonic stem-like cells feed layer.
目的建立人胚胎干细胞饲养层培养体系。
AIM: Feeder layer cells are the necessary condition to prevent the differentiation of embryonic stem cells cultured in vitro.
目的：为保持胚胎干细胞的高度未分化状态，饲养层细胞成为胚胎干细胞体外培养中不可缺少的条件。
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。
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、。
Without feeder layer, human embryonic stem cell differentiation was observed in vitro.
撤除饲养层，观察人胚胎干细胞体外分化情况。
The treatment drives the human embryonic stem cells toward forming an epidermis, the outer layer of skin the researchers report.
这些研究者们报告说，这种处理促进人类胚胎干细胞形成表皮，即皮肤的外层。
The follicle layer of derma was developed during the embryonic period and it had a constant thickness in each stages of age (P>0.05).
真皮的毛囊层在胚胎时期就已发育形成，其厚度在各年龄段基本趋于一致（P＞0．05）。
The follicle layer of derma was developed during the embryonic period and it had a constant thickness in each stages of age (P>0.05).
真皮的毛囊层在胚胎时期就已发育形成，其厚度在各年龄段基本趋于一致（P＞0．05）。
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