胚区

在原肠期，胚区前端的外胚层细胞增殖形成视叶原基。

The results showed : At gastrula stage , the cells in front of the embryonic area gradually cleave to form optic disc rudiment .

结果表明：雹胚源区出现在主上升气流前侧上升气流向辐散下沉气流的转向处，在垂直方向上位于最大上升速度上方；

The findings show that location of hail embryo lies in front of the main updraft , at the turning of updraft to divergence downdraft , and above the largest ascending velocity in the vertical direction .

目的对抗癌胚抗原单区抗体进行表达研究。

Objective To probe into expression of single domain antibody for anticarcinoembryonic antigen ( CEA ) .

不同胚龄或脑区来源的NPC星形胶质细胞及神经元分化比例一致。

Under the same culture conditions , the percentage of differentiated neuron or astrocyte has no difference in the neural progenitor cells from embryonic brains of different age or region .

人胚肋软骨静止区细胞的体外培养及生物学特性研究

Culture of the Resting Cell of Human Embryo Costal Cartilage and Study on Their Biological Behaviors in Vitro

目前认为，至少有两个独立的部位与永久造血有关，即卵黄囊和胚内的PAS/AGM区。

In present opinion , there are at least two independent sites associated with definitive hematopoiesis , those are , yolk sac and para aortic splanchnopleura ( PAS ) / aorta gonad mesonephros ( AGM ) .

目的：研究体外培养的人胚肋软骨静止区细胞的生物学特性及分化规律，为组织工程生长板的研究提供种子细胞。

Objective : To study the biological characteristics and differentiation rule of resting cell of human embryo costal cartilage cultured in vitro and provide the seed cells in large quantity for the use of human engineered growth plate tissue .

结果表明：可长成大雹的雹胚的初始出发区的位置主要由雹云的流场决定，而与雹胚的大小关系不明显；

The results show that the starting location of hail embryo which can growth to large hailstone is decided by the streamline field of hail storm , and the effect of hail embryo size on the formation of large hailstone is not remarkable .

目的研究人胚不同胚龄或脑区神经前体细胞（NPC）体外培养及增殖分化特性。

Objective To investigate the culture , proliferation and differentiation of human neural progenitor cells derived from embryonic brains of different age or region .