胚前期 的英文怎麼說

中文拼音 [pēiqiánqī]
胚前期 英文
pre-embryonic period
  • 胚 : 名詞[生物學] （初期發育的生物體） embryo
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  1. Purpose embryonic stem cells ( escs ) which are from the inner cell mass ( icm ) of preimplantation blastula are pluripotent. neurons are considered as terminally differentiated cells that can not divide nor proliferate after injury

    目的胚胎幹細胞（ embryonicstemcells ， escs ）來源於著床前胚胎的囊胚期內細胞團（ innercellmass ， icm ） ，具有發育全能性。
  2. In the early neurula, cortactin staining signals were detected in the developing primodium of forebrain as early as 10. 5 hpf ( hours post fertilization ), at the same time the tailbud areas were highly stained too. later, the staining was concentrating in the developing neural rod while paraxial mesoderm derivatives were not stained

    在早期神經胚，神經系統中的前腦原基最先出現染色，並保持頭尾兩端處染色最強的圖式，隨后，染色集中分佈在發育中的神經龍骨中，但近軸中胚層細胞沒有染色。
  3. The eolutionary precursor to the backbone, the notochord is a fine, flexible chord defining the body axis in the early embryos of all ertebrates

    脊索是脊椎進化的前體，脊索在所有的脊椎動物胚胎早期起到柔韌軸的作用。
  4. A srudy of prenatal diagnosis by ceolocentesis

    胚外體腔穿刺術在早期產前診斷應用的初步探討
  5. Using the hprt gene as a positive control, our result suggested that both the testis tissue and the male embryos from which sry transcription can be detected failed to yield any positive results of xist. female embryos at the pronucleus stage and 2 - cell failed to produce any positive result of sry and xist too. while since the 4 - cells period, xist is constantly transcribed until blastocyst stages

    然後利用實驗一確定的pcr條件，以hprt為陽性對照，用巢式rt - pcr對小鼠早期胚胎進行xist基因的轉錄分析，結果發現，轉錄sry基因的睪丸組織以及雄性胚胎，從受精卵發育到囊胚的過程中，基本上不轉錄xist基因；不轉錄sry基因的雌性卵母細胞和雌性胚胎，從出現原核開始，到發育至2 -細胞期的過程中， xist基因一直不轉錄，但是，從4 -細胞期開始，一直到孵化前囊胚階段，雌性胚胎都轉錄xist基因。
  6. Now it has been one of the most important aquatic products in the freshwater cultivation. however, this prawn ca n ' t survive at a water temperature lower than 14c, which has seriously limited its cultivation expanding. in order to obta in a new breed of this prawn with increased cold - resistance, we investigated the cloning of a synthetic gene ( sbwafp ) based on the primary sequence of the mature spruce budworm ( choristoneura fumiferana ) antifreeze protein ( sbwafp ) and the integration of sbwafp into the embryo genomes of giant freshwater prawn by spermatophore - microinjection ( smi ), a sperm - mediated gene transfer technique

    本研究的特色和創新之處在於，針對羅氏沼蝦不耐低溫，但體型相對較大，精莢明顯的特點，首次將目前已知具有最強抗凍活性的雲杉卷葉蛾（ sprucebudworm ， choristoneurafumiferana ）抗凍蛋白（ sbwafp ）基因（ sbwafp ） ，通過精子介導的轉基因技術整合到羅氏沼蝦的胚胎中，以期培育出耐低溫的羅氏沼蝦新品系。
  7. Human bone morphogenetic protein 3 is a member of tgf - b superfamily. lt can induce the differentiation of cartilage and bone tissue in mesenchymal cell. and is important to bone self - repairment and bone development during embryo morphogenesis. in addition, some other biological activities of hbmp - 3 have also been found. such as inducing development of embryo and stimulating differentiation of neural and blood cells. therefore, there is a great prospect in the use of hbmp - 3. there is trace content of hbmp - 3 in human body. it has been expressed in the expression system of eukaryotes and prokaryotes respectively, but its application is restricted because of defects in the process and modification after translation in prokaryotic cells and higher costs and lower yields existed in eukaryotic expression system

    人骨形成蛋白3 （ hbmp - 3 ）屬于tgf -超家族的一員，可以誘導間充質細胞分化為軟骨和骨，在胚胎時期骨骼發育和骨再生修復中起著重要的作用，而且對胚胎發育過程中中胚層的誘導和分化、造血組織的發育以及神經系統的發育和修復等都起著重要作用，因而hbmp - 3有廣闊的市場前景。它在人體內含量極微，盡管研究人員已經在原核細胞和真核細胞表達系統中分別進行了表達，但是由於原核表達系統缺乏翻譯后的加工修飾，真核表達系統存在成本高、產量低等特點，限制了其在臨床上的應用。
  8. Obesity, pre - diabetes and diabetes can affect ejaculation, sperm production, ovulation, miscarriage rates and increase fetal malformation rates

    肥胖、糖尿病前期和糖尿病都能影響射精、精子產生、排卵、流產幾率和增加胚胎發育不良的機會。
  9. The first period is the embryonic period ( from around the usa was found to the middle of the 1960s ), the second period is the initial period ( from the middle of the 1960s to the end of the 1980s ), and the third is the flourishing period ( from the end of the 1980s to this day )

    筆者將美國擇校制度的發展歷程分為三個階段，即美國擇校制度的胚胎期（建國前後至1960年代中期） 、美國擇校制度的初步形成期（ 1960年代中期至1980年代末期）和美國擇校制度的蓬勃發展期（ 1980年代末至今） 。
  10. Objective : l. to measure the levels of basal serum follicle stimulating hormone ( fsh ), luteinizing hormone ( lh ), estradio ( e2 ) in peripheral blood in natural menstrual cycle and to investigate the correlations between the hormones and ivf - et outcome. 2. to measure the levels of fsh lh e2 in peripheral blood in controlled ovarian hyperstimulation ( coh ) cycle and to investigate the correlations between the hormones and ivf - et outcome

    目的： 1 、測定控制超排卵患者控制超排卵周期前基礎外周血促卵泡素（ fsh ） 、黃體生成素（ lh ） 、雌二醇（ e _ 2 ）水平，並探討其與體外受精-胚胎移植（ ivf - et ）結果的相關關系。
  11. Although earlier attempts at retina transplantation using embryonic stem cells failed, the researchers say that by using stem cells at a later stage of development, they were able to repair damaged retinas in the mice

    盡管以前嘗試使用胚胎幹細胞進行視網膜移植失敗了，研究人員稱通過使用發育後期的幹細胞，他們修復了小鼠受損的視網膜。
  12. “ we worked on the theory that cells at a later stage of development might have a higher probability of success upon transplantation ” says researcher robin ali of the university college london institute of ophthalmology in a news release

    盡管以前嘗試使用胚胎幹細胞進行視網膜移植失敗了，研究人員稱通過使用發育後期的幹細胞，他們修復了小鼠受損的視網膜。
  13. This expression vector plbcas - hsa - lgl has the following advantages : i ) the 1. 7kb promoter is able to drive cell - specific and hormone - dependent expression ; ii ) the inclusion of intron - 1 can increase expression level of fusion genes ; iii ) the 5 ' utr of bovine p - casein mrna may have a positive role in both transcriptional and post - transcriptional regulation ; iv ) the gfp gene make the selection of positive clone among embryos possible ; v ) the gfp gene can be easily excised via cre - mediated recombination between the two loxp sites after the expression vector has been integrated into chromosome ; vi ) the two incompatible lox sites, loxp and lox2272, would facilitate cre - recombinase mediated cassette exchange ( rmce ), which in theory will leading to develop a technology of site - specific gene expression in animal mammary glands

    該載體的特點是：具有可以調控外源基因在乳腺中特異表達的牛-酪蛋白基因5 `端側翼區和包括第一外顯子及內含子在內的5 `端調控區；將人血清白蛋白cdna準確地置於牛-酪蛋白基因第二外顯子中的翻譯起始密碼子atg之後，而且沒有增加額外的序列和使人血清白蛋白cdna移碼；引入標記基因gfp ，便於在胚胎期鑒定陽性胚胎，減少受體；引入cre lox重組系統： （ ? ）標記基因gfp的兩端的兩個loxp位點可以在表達載體整合到基因組后，刪除標記基因； （ ? ）餘下的一個loxp位點可以和前面的lox2272位點組成cre重組酶介導的盒式交換系統。
  14. There was no significant difference between the fusion rates of reconstructed embryos. the cleavage rate of embryos reconstructed with c57bl / 6j oocytes was significant high than that of kunming albino, but the former only developed to 4 - cell stage ; the later could develop to blastocyts. it is implied that the oocytes of inbred mouse cannot support the long - term development of kunming es cell

    兩種重構胚的融合率之間沒有顯著差異（ p 0 . 05 ） ， c57bl 6j重構胚的卵裂率（ 60 . 5 ）明顯高於昆明白小鼠（ 33 . 7 ） ，但是前者只發育到4細胞期，而後者可以發育到桑椹期和囊胚期（ 2 . 3 ） 。
  15. Embryonic shield and its neighboring areas were especially highly stained and cortactin marked the cells undertaking active convergencing movement. the stained areas were belt - like along the anterior and posterior axis, firstly short and wide, with the progression of gastrulating, the stained belt was extending interiorly and narrowed, but the anterior and posterior terminals were sustainedly highly stained

    在原腸中期后，染色區域沿胚胎前後軸呈帶狀分佈，最先出現的染色區域寬而短，隨著原腸化的進行，帶狀的染色區域延伸並逐漸變細，在遷移中，胚盾區域的染色始終很強。
  16. Because it is not possible at this time to quantify all the steps of the panspermia scenario, investigators cannot estimate how much biological material or how many living cells most likely arrived at earth ' s surface in a given period

    由於當前無法量化胚種說情境中的所有步驟，研究人員無法估計某特定時期內，可能有多少生物體或活細胞抵達地球表面。
  17. The study of human embryos cultured in vitro indicated that the survival rate and viability of embryos cultured in vitro is much lower than those in vivo

    對在體外培養的人胚胎的觀察發現，大約有50的人胚在發育至胚泡期之前停止發育。
  18. All endocrine cells in the pancreas of alligator sinensis embryos distributed separately in the early days. but a few gathered together from the midterm of development toward hatching stage

    另外，在揚子鱷胚胎胰腺中，內分泌細胞在早期都是單個分散分佈，中期出現細胞群，在孵出前大多數單個分散分佈，少數成群分佈。
  19. Es cells are the cells derived from the inner cells mass ( icm ). they are capable of differentiating in vitro into multiple cells types under the stimulation of right signals

    Es細胞來源於著床前囊胚期內細胞團（ innercellmass ， icm ） ，具有發育全能性。
  20. And also, it was firstly reported here that cortactin functions in the developing primordium of forebrain as early as 10. 5 hpf, much more earlier than what is known by now about the forebrain primordium molecular marker such as hnk - 1 ( 12hpf ) ( 46 )

    5小時，在早期神經胚的前腦原基發現皮層蛋白表達，這比己知的最早的前腦標記基因（ hnk1 ） n6 ）的表達還要早2個小時。
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