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- The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop. 外胚层胚胎最初三层胚层中的最外一层，由此发育成为表皮、神经组织和脊椎动物的感觉器官
- The outermost of the three primary germ layers of an embryo,from which the epidermis,nervous tissue,and,in vertebrates,sense organs develop. 外胚层胚胎最初三层胚层中的最外一层，由此发育成为表皮、神经组织和脊椎动物的感觉器官。
- The innermost of the three primary germ layers of an animal embryo,developing into the gastrointestinal tract,the lungs,and associated structures. 内胚层动物胚胎三个原始胚层的最内层发育成胃肠道、肺及其附属衍生结构
- The innermost of the three primary germ layers of an animal embryo, developing into the gastrointestinal tract, the lungs, and associated structures. 内胚层动物胚胎三个原始胚层的最内层发育成胃肠道、肺及其附属衍生结构
- primary germ layer 原胚层
- Methods: Add sodium chloride injection to the germ layer medium. 方法:菌层培养基加氯化钠注射液。
- the innermost of the three primary germ layers of an animal embryo,developing into the gastrointestinal tract,the lungs,and associated structures 内胚层，动物胚胎三个原始胚层的最内层发育成胃肠道、肺及其附属衍生结构
- 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 results showed that active oxygen was detectable on all the infected sites by the fungal primary germ tubes, appressoria, and the infection lobes of growing secondary hyphae. 结果表明，小麦对来自白粉病菌附着胞、初生芽管以及次生菌丝的侵染均能够产生活性氧的积系。
- 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 layer of cells formed by the cleavage of a fertilized mammalian egg.It later divides into the three germ layers from which the embryo develops. 胚盘由哺乳动物受精卵分裂而形成的细胞层。后期分裂为三层，胚胎由此发育
- The layer of cells formed by the cleavage of a fertilized mammalian egg. It later divides into the three germ layers from which the embryo develops. 胚盘，由哺乳动物受精卵分裂而形成的细胞层。后期分裂为三层，胚胎由此发育。
- Derived from two embryonic germ layers, the ectoderm and the endoderm. Used of lower invertebrates, such as sponges and coelenterates. 双胚层的具有两个胚层（外胚层和内胚层）的。用于低等无脊椎动物，如寄生虫和腔肠动物
- The principal institutions of mankind have been developed from a few primary germs of thought. 人类的主要制度是从少数原始思想的幼苗中发展出来的。
- Until now, the three germ layers formed, the three germ layers is the development of primordial matrix. 到现在为止，三胚层就形成了，三胚层是胎体发育的始基。
- chicken primary germ cells (cPGC) 鸡原生殖细胞（cPGC）
- Primary germ cell tumor of central nervous system 原发中枢神经系统生殖细胞瘤
- Derived from two embryonic germ layers, the ectoderm and the endoderm.Used of lower invertebrates, such as sponges and coelenterates. 双胚层的具有两个胚层（外胚层和内胚层）的。用于低等无脊椎动物，如寄生虫和腔肠动物
- Derived from two embryonic germ layers,the ectoderm and the endoderm.Used of lower invertebrates,such as sponges and coelenterates. 双胚层的具有两个胚层(外胚层和内胚层)的。用于低等无脊椎动物，如寄生虫和腔肠动物
- After a period of growth, to 4 pm at the blastoderm over the weekend inside and outside the two germ layers, from the ectodermal layer of differentiated cells within the mesoderm to form embryos. 经过一段时间的发育，到4周末时在胚盘内、外两胚层之间，由外胚层分化出一层细胞，形成胚内中胚层。
