胚层

Because of the significance of zebrafish Dapper2 in mesoderm induction, the mouse dapper2 was cloned following its homolog. The study of its spatial and temporal expression pattern showed that it expressed specifically in otic vesicle, somite,gut and roof plate of mouse embryos.

鉴于Dapper2对于胚胎中胚层发育的重要性，本文首先克隆出小鼠Dapper2基因，并研究其时空表达谱，发现它在体节形成期后在体节、耳泡、神经顶板、肠等组织中特异性表达。

We explore a novel strategy to isolate endoderm cells, based on the polar distribution of different tissues in tentacles of stony coral Euphyllia glabrescens.

根据石珊瑚里束形针叶珊瑚触手中组织分佈特性，我们尝方式以一个新技术来分离內胚层细胞。

Struma ovarii are rare ovarian monodermal teratoma,with low rate of malignant change and good prognosis.

卵巢甲状腺肿是少见的卵巢单胚层畸胎瘤，恶变率低，预后好。

Blood is an opaque, mobile fluid connective tissue that is mesodermal in origin.

血液是一种不透明的，移动流体结缔组织是中胚层起源于国内。

The uvea (choroid, iris, and ciliary body) is derived from neuroectoderm and mesoderm and may develop tumors from both origins.

葡萄膜由神经外胚层和中胚层分化而来，能够形成这两者来源的肿瘤。

Basic fibroblast growth factor is a potent mitogen for a variety of mesoderm- and neuroectoderm-derived cells and has been found in aqueous humor, vitreous and other ocular tissues.

碱性成纤维细胞生长因子（basic fibroblast growth factor bFGF）是对广泛来源于中胚层和神经外胚层细胞的有效促细胞分裂因子，已在房水、玻璃体和其它眼组织中发现。

According to 5'flank regions and partial sequences of the MyoG gene in Sus scrofa, Bos taurus, Homo sapiens, and Mus musculus published in GenBank, the homogeneous primers were designed to amplify the promoter region of Gansu wapiti MyoG by Touch-Down PCR.

MyoD和MyoG是一类肌调节蛋白，其中MyoD代表肌源性的发生；MyoG诱导骨骼肌的最终分化，调控中胚层细胞分化为成肌细胞，再由成肌细胞融合为肌纤维这一过程，在肌细胞分化过程中起着中心调节作用，是唯一的不可替代的成肌调节因子[2]。

Then, under the control of systemic factors, mesenchymal cells aggregate and differentiate to form catilage blastemal elements that prefigure skeletal limb components.

脊椎动物胚胎期骨与关节系统的发生是一种复杂生命现象，起始于中胚层间充质细胞的定向聚集，形成肢芽，然后在一系列作用因子的调控下，肢芽内细胞进一步分化，形成具有骨骼雏形的软骨原基，后者经软骨内骨化发育成骨。

In resent year, several in vitro models for committed differentiation of ES cells have been described which give rise to a variety of cell types, including hematopoietic, neuronal, chondroitic, osteocytic, endothelial, myogenic, cardiac and smoothes muscle cells, but the committed differentiation into epidermal stem cells have not been reported.

ES细胞为研究基因功能、胚胎发生和个体发育，及组织细胞分化机理提供了理想的模型。近年来的研究表明，适当条件下，ES细胞可定向分化为三个胚层的各种类型的细胞，其中包括向神经元、造血细胞、成骨细胞、心肌细胞、血管内皮、软骨细胞、平滑肌特方向的定向分化。

The outer layer of a diploblastic animal ,such as a jellyfish.

外层双胚层动物的外层，如海蜇

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。