血胚细胞

The results showed:(1) the cellule morphous and the disposition in chick embryo of PGCs were coincident no matter stained by PAS or HE staining, and HE staining could disclose the morphologic characteristics more clearly, exactly and completely;(2) genesis of blood island could be observed at the boundary of light and dark region of the extraembryonic blastoderm at about 26 hours;(3) both the blood vessel endothelium cells and free cells of the blood island were differentiated from PGCs. The generating of genuine yolk sac was at about 44-48 hours.

结果表明：①用经典的识别原生殖细胞的PAS染色方法与HE染色所观察到的PGC在鸡胚的分布及细胞形态基本一致，而HE染色较PAS法能更有助于清晰、完整、准确地识别PGC的细胞内部结构特征；②在孵化26小时的鸡胚胚外胚盘的明暗交界处可见血岛的发生，血岛发生的时间比真正的卵黄囊产生时间（大约44-48小时）要早很多；③血岛周围的血管内皮细胞与管腔中游离细胞都来自PGC。

It is concluded that the initial ancotomic site of blood island genesis may be is mesoblast of extraembryonic blastoderm rather than the yolk sac; the blood vessel endothelium cells and the blood cells are generated parallel; the PGCs are the common ancestry of angioblast and HSC.

血岛最早发生的解剖位置可能不是卵黄囊而是胚外胚盘中胚层，血管内皮细胞与血细胞平行发生，PGC是成血管－造血干细胞的共同祖先。

Methods The peripheral blood lymphocytes,sera of 55 patients with rheumatic carditis and a specific antigen from group A streptococcal cell membrane were prepared and used as stimulants to test the heart tissue cell procoagulant activity in culture.

用风湿性心脏炎患者的外周血淋巴细胞、血清及A组乙型溶血链球菌膜抗原作为刺激物，测定体外培养的人胚心肌细胞促凝血活性。

A virus strain with high hemagglutinin titer was isolated out from embryonated egg and MDCK cells after they were inoculated with the lung tissues of the died marmosets.

在排除细菌感染的基础上，通过死亡狨猴肺组织匀浆接种鸡胚和MDCK细胞的分离培养，分离出一株具有很高血凝效价的病毒株。

Methods: Influenza viruses were isolated with the means of cultured in MDCK cell and embryonated eggs. The cross hemagglutination inhibition test was used for antigenic analysis and determined nucleotide sequence of HA1 genes of the influenza A (H3N3) virus.

采用MDCK细胞培养和鸡胚培养法分离流感病毒，交叉血凝抑制法进行抗原分析，对甲3型流感病毒的HA1血凝素基因作了核苷酸序列测定。

A virus strain with high hemagglutinin titer was isolated out from embryonated eggs and MDCK cells after inoculating with the lung tissues suspension of the dead marmosets.

在排除细菌感染的基础上，通过死亡狨猴肺组织匀浆接种鸡胚和MDCK细胞的分离培养，分离出一株具有高血凝效价的病毒株。

This process, called vasculogenesis ,involves the de novo differentiation of endothelial cell from mesodermal precursor to form the primitive blood vessel network.

血管生成是指在胚胎发生和器官形成过程中，从中胚层内皮细胞中分化出新的内皮细胞以形成原始血管网的过程，仅见于胚胎发生的早期，出生后即停止。

From its the depart in splanchnic organization arrives bacterium of 2 individual plant, pass bacteriological method appraisal, one individual plant is deputy pig bloodsucking bacili, another individual plant is a pig streptococcic; will send check sample book have an inoculation to marc-145 cell, can observe cellular pathological changes, the pcr of virus fluid classics of results detects, for positive of blue ear ill viru

从其内脏组织中分离到2株细菌，通过细菌学方法鉴定，一株为副猪嗜血杆菌，另一株为猪链球菌；将送检样本接种到marc-145细胞，能观察到细胞病变，收获的病毒液经pcr检测，为蓝耳病病毒阳性；将送检的样本接种spf鸡胚，收获的鸡胚尿囊液有血凝性，血凝试验和血凝抑制试验鉴定为猪副黏病毒。

In later period, NSCs in the brain parenchyma are significantly reduced, and gradually migrates into the choroids plexus of the lateral ventricle and capillary of brain surface, which are digested by endothelial phagocytes.

移植后期脑实质内存活的神经干细胞明显减少，大量迁移到侧脑室脉络丛和脑表面微血管内，被内皮吞噬系统消化。关键词：人胚神经干细胞；脑梗死；细胞分化；迁移

The cleavage rate of 2-cell stage was 50%, but few embryos developed into morulas and blastocysts (2%). More than 130 embryos at 2-4-cell stage were transferred into oviduct of 13 synchronized foster rabbits and 2 mice. No fetus or implantation sites were observed in both recipients.

其2—细胞胚胎的分裂率可达50％，但发育至桑椹胚和囊胚阶段的胚胎数目大大减少，只有2％的囊胚发育率。13只受体兔共移植重构胚胎121枚，结果未发现产仔或死胎，仅看到有的兔子宫有於血状。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。