胎儿胎盘的

Imprinted genes, with their key roles in controlling feto-placental nutrient supply and demand and their epigenetic lability in response to nutrients, may play an important role in adaptation/eolution.

有印记的基因、这种基因在控制胎儿胎盘营养供给和需求中的重要作用及其对营养响应的表遗传易变性，在适应环境和进化过程中可能起重要作用。

Decidual tissue is a very complex and highly concordant tiny environment between mother and embryo during pregnancy, which is constituted of the variety cells such as extravi11ous trophoblast,endometrium cells, bone marrow cells, decidua l microphage,T cells and a few B cells and so on.

正常蜕膜组织是母-胎界面间一个非常复杂而又高度协调的微环境，它由多种细胞如侵袭至蜕膜的绒毛外滋养细胞(extravi11ous trophoblast，EVT)、子宫内膜源性细胞(如上皮细胞和血管内皮细胞)、骨髓源性细胞(如大颗粒淋巴细胞、蜕膜巨噬细胞、T细胞和少许B细胞)构成，这些细胞以及由这些细胞、母体和胎儿所分泌到蜕膜的细胞因子共同形成了母-胎间信息交流的平台，并对胚胎滋养细胞"有控性"侵袭、子宫内膜的免疫容受性、蜕膜化和胎盘的形成进行精细的调控。

The results were compared with control group. Results In group of ill pregnanted fetus, the contents of necessary nutrition elements in blood and tissue were all lower except that Fe in the group of congenital malformed foetus was high. The variation was especially evident in gravida's biood, umbilic blood, placenta, and liver of fetus. The contents of heavy metals such as Pb, Cd, Hg were all higher, and the variation was evident in placenta, liver of fetus and occipital bone.

结果 除先天性畸形胎儿组中的铁偏高外，其余血液及各组织中必需营养元素钙、锌、铜、铁、硒和维生素A含量普遍偏低，在母血、脐血和胎盘及胎儿肝脏中差异显著(P.05)；重金属铅、镉、汞含量普遍较高，在胎盘、胎儿肝脏和枕骨等组织中差异显著(P.05)。

The present study suggested that high levels of plasma IGF-1 of perinatal ewes may related to the growth and development of fetal sheep; cholic acid load may affect IGF-1 production in liver and/or the regulatory function of placenta.

本研究提示妊娠后期绵羊母体血浆高水平的IGF-1可能与胎儿生长发育有关；胆酸负荷可能影响了妊娠母体的肝功能或胎盘的调节作用。

We have performed systematical studies on intrauterine transmission of hepatitis B virus and our studies suggested that HBV may occur through progressive infection of different placental layers until the virus reaches the fetoplacental circulation, which is the named "transplacental cellular traffic" except through placental tears with transfusion of infected maternal blood into the fetal circulation, which is the named "hematogenous transmission".

我室近年来对HBV宫内传播进行了系列研究，发现了胎盘在宫内传播中的作用，并提出了HBV宫内传播机制的假设：除血源性途径外，还可通过HBV在胎盘组织内的&细胞传递&途径，即HBV可以从母体蜕膜细胞通过&逐层转移&至胎儿绒毛毛细血管内皮细胞，导致胎儿感染。

Results: The ultrasonic image have apparent characteristic for hydrops fetalis syndrome. The ultrasongraphic findings of hydrops fetalis syndrome included: cutaneous edema, hydrothorax, ascites, enlarged placenta, hepatomegaly, deformity of extremity, hydramnios or hypamnios, arrhythmia and cardia insufficiency et al.

结果：胎儿水肿综合征的超声图像具有特征性，表现为：皮肤水肿、胎儿胸腹水、胎盘增厚、肝大、肢体短小、羊水增多或减少，胎儿心律失常及心功能不全等。

HBV transplacental transmission route may be realized by cell to cell transfer in placenta, which means that HBVs in maternal blood and/or intervillous space infect DCEC and/or DC and/or TC, then transmit to VMC, then to VCEC, and finally to fetus.

HBV经胎盘感染胎儿的路径可能是通过胎盘细胞至细胞的传递而实现的。即母血和/或绒毛间隙HBV→蜕膜毛细胞管内皮细胞和/或蜕膜细胞和/或滋养层细胞→绒毛间质细胞→绒毛毛细血管内皮细胞→胎儿。

Placental factors, such as the placenta dysplasia, a smaller placenta, placental formation Duocheng lobulated, therefore, the fetus through the placenta supplies nutrients bound to be affected.

胎盘方面因素如胎盘发育不良，胎盘较小，胎盘形成多呈分叶状，因此，通过胎盘供应胎儿的营养物质必然受到影响。

Objective:To studying the hemodynamic characteristics of umbilical artery blood flow pulsatility in fetal sheep.

目的：经胎羊腹主动脉注射微球的方法阻塞胎盘，建立胎儿窘迫的动物模型，研究脐动脉搏动指数的血液动力学特点。

The twins share a single placenta, and their circulations are essentially linked to each other through their placental anastomoses.

此类双胞胎共用一个胎盘，本质上一胎儿的血液通过胎盘血管吻合网输入到另一胎儿。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。