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embryonic loss
相关语句
  胚胎死亡
     Spontaneous embryonic loss fo llowing in vit-ro fertilization:Incidence and effect on out-comes
     体外受精后自发性胚胎死亡的发生率及其对结局的影响
短句来源
     This relatively high early embryonic loss may be associated with multiple pregnancy complications or the other abnormalities of placentation frequently observed in cloned embryos.
     这种相对较高的早期胚胎死亡可能与多因素影响怀孕的复杂性和在克隆胚上经常观察到的胎盘形成异常有关。
短句来源
  “embryonic loss”译为未确定词的双语例句
     Spontaneous embryonic loss after in vitro fertilization with and without intracytoplasmic sperm injection
     体外受精时卵母细胞单精子显微注射对自发性胚胎缺失的影响
短句来源
     This paper reports the results of chromosome analysis of peripheal blood lymphocytes in 30 married couples with embryonic loss, 18 of whom with contamination of various chemical poisons served as study group and the rest 12 of whom without the contamination history as the control group.
     本文报道了有胚胎损失的30对夫妇外周血淋巴细胞染色体结果,包括18对接触不同的化学毒物(研究组),和12对没有接触史作为对照组。
短句来源
  相似匹配句对
     Loss and Reconstruction
     迷失与重构
短句来源
     loss of interest;
     利息的丧失;
短句来源
     Spontaneous embryonic loss after in vitro fertilization with and without intracytoplasmic sperm injection
     体外受精时卵母细胞单精子显微注射对自发性胚胎缺失的影响
短句来源
     Spontaneous embryonic loss fo llowing in vit-ro fertilization:Incidence and effect on out-comes
     体外受精后自发性胚胎死亡的发生率及其对结局的影响
短句来源
     ENDOCYTOSIS AND EMBRYONIC INDUCTION
     内吞作用与胚胎诱导
短句来源
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  embryonic loss
Lower embryonic loss rates among twin gestations following assisted reproduction
      
The individualized regimen of HMG is valuable in increasing the number of fertilized oocytes and compensates with multiple-embryo transfers for the high early embryonic loss occurring in IVF.
      
This embryonic loss could not be prevented by the disruption of Hrk, but was diminished in embryos lacking Bax.
      
Embryonic loss due to exposure to polycyclic aromatic hydrocarbons is mediated by Bax
      
Evaluation of Early Embryonic Loss Induced by Tributyltin Chloride in Rats: Phase- and Dose-Dependent Antifertility Effects
      
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This paper reports the results of chromosome analysis of peripheal blood lymphocytes in 30 married couples with embryonic loss, 18 of whom with contamination of various chemical poisons served as study group and the rest 12 of whom without the contamination history as the control group. The results showed that the number of the persons with chromosome aberration in the study group(18 couples, 3G people) was 22(61.1%) while the number of the persons in the control group was much lower, only 2 in 24(8.3%)(X~2=16.76...

This paper reports the results of chromosome analysis of peripheal blood lymphocytes in 30 married couples with embryonic loss, 18 of whom with contamination of various chemical poisons served as study group and the rest 12 of whom without the contamination history as the control group. The results showed that the number of the persons with chromosome aberration in the study group(18 couples, 3G people) was 22(61.1%) while the number of the persons in the control group was much lower, only 2 in 24(8.3%)(X~2=16.76 P<0.01).It was also found that most of the chromosome aberrations were polyploid and endoreduplication.The percentage of aberration in cells of study group was 3.90% which was much higher than that of control group(0.24%)(X~2=42.29, P>0.01).The chemical poisons were well known as the embryonic teratogens. It was suggested that the contamination of chemical poisons during preganancy especially in the early stage, should be avoided in order to reduce the embryonic loss.

本文报道了有胚胎损失的30对夫妇外周血淋巴细胞染色体结果,包括18对接触不同的化学毒物(研究组),和12对没有接触史作为对照组。染色体分析结果表明,在研究组有染色体畸变的人数是22人(61.1%),而对照组数目低的多,在24人中仅有2人(8.3%)。X~2=16.70,P<0.01。染色体畸变最多的是多倍体及内复制。在研究组畸变细胞的发生率为3.9%,明显高于对照组0.24%。X~2=42.29,P<0.01。众所周知,化学毒物是胚胎致畸剂。建议在妊娠时应避免接触化学毒物,特别是妊娠早期。

Despite increasing interest in the use of cloning techniques to multiply elite livestock, engineer transgenic animals for agricultural and biomedical purposes or rescue endangered species, cloning technology is still considered too inefficient and expensive for widespread application. In an attempt to determine the cultural factors that would improve cloning efficiency, we compared the effects of two incubation systems - a simple portable system and a standard CO 2 incubator - on the production of reconstituted...

Despite increasing interest in the use of cloning techniques to multiply elite livestock, engineer transgenic animals for agricultural and biomedical purposes or rescue endangered species, cloning technology is still considered too inefficient and expensive for widespread application. In an attempt to determine the cultural factors that would improve cloning efficiency, we compared the effects of two incubation systems - a simple portable system and a standard CO 2 incubator - on the production of reconstituted bovine embryos by electrofusion of quiescent fetal fibroblast nuclei to enucleated oocytes matured in vitro. While the temperature (38.5℃) and CO 2 concentration (5%) were similar in both systems, in the portable incubator the O 2 level was low (8% to 10%), and this system also operated under the influence of negative air pressure (300 mm Hg).\;Although there were no significant differences between the two systems in terms of in vitro oocyte maturation (M II), fusion rates, and the number of cells in Day 7 blastocysts, significantly higher proportions of nuclear- transferred oocytes cleaved (P < 0.05) and managed to develop to the blastocyst stage (P < 0.01) in the portable incubator (70.5 ± 0.6% and 36.1 ± 1.4% , respectively) than in the standard incubator (64.1±3.2% and 23.5±1.4% , respectively). Following the transfer of 6 blastocysts from the portable incubator group to three recipients, survival rates on Days 60, 90, and 120 were 100%, 66.7% and 33.3%, respectively. This relatively high early embryonic loss may be associated with multiple pregnancy complications or the other abnormalities of placentation frequently observed in cloned embryos. However, further studies using this portable incubator system are needed to determine the optimum levels of O 2,CO 2, and air pressure.

尽管利用克隆技术来扩大优良品种家畜的数量 ,以及生产以农业和生物医学为目的的转基因动物和拯救濒危动物品种的需求不断增加 ,克隆技术对于大规模应用仍然成功率太低 ,而且成本昂贵。为了探索培养因素对改进克隆效率的作用 ,我们比较了标准与简易便携式CO2 培养箱对通过融合胎儿成纤维细胞核与去核的体外成熟卵母细胞生产的牛重构胚。在这两种培养系统中 ,温度 ( 38.5℃ )和CO2 浓度( 5% )相同 ,便携式培养箱的CO2 浓度较低 ( 8%到 1 0 % ) ,该培养系统同时在负压影响下进行了操作。虽然两种培养系统对卵母细胞体外成熟 (MII)、融合率和第 7d发育囊胚的细胞数无显著差异 ,但便携式培养箱的卵裂率 (P <0 .0 5)和囊胚率 (P <0 .0 1 ) ( 70 .5%±0 .6 %和 36 .1 %± 1 .4% )显著高于标准培养箱 ( 6 4.1 %± 3.2 %和 2 3.5%± 1 .4% )。将 6枚在便携式培养箱培养的重构胚移入 3只受体牛 ,在 6 0、90和 1 2 0d的存活率分别为 1 0 0 %、6 6 .7%和 33.3%。这种相对较高的早期胚胎死亡可能与多因素影响怀...

尽管利用克隆技术来扩大优良品种家畜的数量 ,以及生产以农业和生物医学为目的的转基因动物和拯救濒危动物品种的需求不断增加 ,克隆技术对于大规模应用仍然成功率太低 ,而且成本昂贵。为了探索培养因素对改进克隆效率的作用 ,我们比较了标准与简易便携式CO2 培养箱对通过融合胎儿成纤维细胞核与去核的体外成熟卵母细胞生产的牛重构胚。在这两种培养系统中 ,温度 ( 38.5℃ )和CO2 浓度( 5% )相同 ,便携式培养箱的CO2 浓度较低 ( 8%到 1 0 % ) ,该培养系统同时在负压影响下进行了操作。虽然两种培养系统对卵母细胞体外成熟 (MII)、融合率和第 7d发育囊胚的细胞数无显著差异 ,但便携式培养箱的卵裂率 (P <0 .0 5)和囊胚率 (P <0 .0 1 ) ( 70 .5%±0 .6 %和 36 .1 %± 1 .4% )显著高于标准培养箱 ( 6 4.1 %± 3.2 %和 2 3.5%± 1 .4% )。将 6枚在便携式培养箱培养的重构胚移入 3只受体牛 ,在 6 0、90和 1 2 0d的存活率分别为 1 0 0 %、6 6 .7%和 33.3%。这种相对较高的早期胚胎死亡可能与多因素影响怀孕的复杂性和在克隆胚上经常观察到的胎盘形成异常有关。使用便携式培养系统还需对CO2 、O2 和气压的最佳水平进行深入研究

 
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