胚層分化 的英文怎麼說
中文拼音 [pēicéngfēnhuà]
胚層分化
英文
germ layer differentiation-
The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment. during the past two decade, the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants, provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants. three new plant based epochs have been recognized. on the other hand, molecular sequence studies have provided insights into the phylogeny and early branches of land plants. a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences. this paper summarizes recent advances and new knowledges, comments on the phylogenetic studies based on the cladistic analysis
陸生植物的起源和演化是地球生命中的重大事件，它影響到地球上所有的其他生命和全球環境。在過去的20年中，從中奧陶世歷經整個志留紀至早泥盆世的巖層中，化石植物微化石和大化石的新發現改變了人們對陸生植物起源的認識，並且為陸生植物和維管植物早期演化分異提供了基部類群分化的時間框架。據此人們識別出地史中的3個陸生植物的時代：始胚植物時代始維管植物時代和真維管植物時代。There is no different between the fibroblast feeder of mouse and the fibroblast feeder of goat according to blastoysts attached and icm proliferation. es - like cell develop embryoid body - like structure in suspension culture in vitro. es - like cells of goat differentiate into various kinds cell, egg : fibroblast cell, neurolike cell
Es細胞在體外懸浮培養，形成類胚體，山羊類es細胞在無飼養層鋪有明膠的皿底上培養，可分化為多種類型細胞，如上皮細胞、成纖維細胞、神經細胞等。Part 1 : the culture and identification of es - d3 cells and the study of the efficiency of eb formation from es cells when grown on mef feeder layer in es culture medium or cultured in es culture medium supplemented with lif 1000u / ml, es - d3 cells being used in our experiments formed normal clones, expressed akp and kept their normal karyotype over many passages. the in vitro and in vivo differentiation experiments showed that es - d3 cells could differentiate into variety of cell types derived from three primary germ layers
結果顯示： eso3細胞在小鼠胚胎成纖維細胞上和或含白血病抑制因於億f ）的es細胞培養液中形成典型的胚胎幹細胞克隆，堿性磷酸酶染色結果為強陽性，具有正常二倍體核型以及具有在體內外分化為三個胚層來源的組織細胞的潛能，而且具有形成種系嵌合動物的能力。At the same time, growth factors have relation to genesis of tumor. fibroblast growth factor ( fgf ) can promote proliferation of tissues derived from mesoderm or neuroectoderm and many tissues and cells can secrete fgf
成纖維細胞生長因子（ fgf ）能夠誘導中胚層和神經外胚層來源細胞的增殖和分化，許多組織和細胞都可以分泌fgf ， fgf可以促進多種細胞的生長和分化。Their differences are based on many aspects which include characteristics of morphology, anatomy and epidermis of leaf, types of tapetum in anther walls, patterns of endothecial thickenings, and ways of development of endosperms, presence or absence of perisperm, components of photochemistry, and sequences of rbcl
菖蒲屬與天南星科其它屬在葉的形態、結構、表面特徵，花藥絨氈層類型，藥室內壁增厚的特點，胚乳的發育方式，外胚乳的有無，植物化學成分， rbcl基因序列等多方面存在著顯著的差異。7 - 10 days " seedlings after the seeds germinated, the meristem in the stem apex functioned to form true leaf primordium, meanwhile, the vessel elements which differentiated from parenchymatous cells of the middle and upper portion of the cnz connected with the vessel elements from procambium of epcotyl - shoot region
種子萌發7 - 10天，幼苗的莖端分生組織活動形成真葉雛形，此時由子葉節區中、上部薄壁細胞的轉分化形成的導管分子與上胚軸-苗區原形層形成的導管分子發生連接。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。The primary primordial germ cells is obtain from the human embryos after 4 - 8 weeks of pregnancy. after mechanical desection and enzymic digestion, the cells were cultured on mouse embryonic flbroblast or human embryonic flbroblast feeder layer inactivated by mitomycin. the medium contains several cytokines : lif ( leukemia inhibitory factor ), bfgf and foskolin
從4 ? 8周的流產胎兒的原始生殖嵴部位分離到原始生殖細胞，經過機械和化學方法的解離后培養於事先用絲裂黴素處理過的小鼠胚胎成纖維細胞或人胚胎成纖維細胞飼養層上，培養基中添加了lif ， bfgef ， foskolin等細胞因子，此後大約每7天左右傳代一次。Marrow stromal cells are adult stem cells from bone marrow that have the potency to differentiate into multiple nonhematopoietic lineages such as bone, cartilage, and lipocyte et al. it also can differentiate into myocytes, hepatocytes, glial cells, and neurons. marrow stromal cell can be easily obtained and have a set of well - developed separation and culture techniques
背景與目的骨髓間充質幹細胞（ mesenchymalstemcells ， mscs ）是具有多向分化潛能的成體幹細胞，除了能向多種中胚層組織細胞分化，如骨軟骨和脂肪細胞外，還可以誘導分化成非中胚層的細胞組織如：神經細胞，肺泡和小腸細胞。Icp analysis shows that the nutritious elements in the organs of bean sprouts, such as roots and hycopotys change after yuanji treatment, exposing that the effect of yuanji treatment is the omnidirectional and multi - level holographic operation, and the orderly change of different organs from seeds to bean sprouts
三元能量的不同載體對豆芽處理的效應，通過icp分析表明，豆芽的不同器官（如根與胚軸）的營養元素多有變化，說明三元能量的效應是全方位多層次的全息運化，是從種子向豆芽的各器官有序變化，從而步步促進生長發育。We used the icr and kunming mice and got the embryos of 3. 5dpc by means of superovulation, then cultured the embryos on the feeder layer derived from icr or kunming mice, dispersed the inner cell masses ( icms ) or es cell colony in the appropriate time. in this period, we analized the effects of feeder layer, trypsin and embryos isolated from uteri of different varietal mice on the es cell lines
以icr小鼠和昆明小鼠為實驗對象，採用超數排卵的方法獲得小鼠胚胎，培養在用絲裂黴素c處理過的icr小鼠和昆明小鼠mef細胞飼養層上，選取適當時間離散增殖的icm和類es細胞集落，分析了在小鼠es細胞建系過程中，飼養層細胞、消化液及不同品系來源的胚胎的影響。The brine shrimp he was prepared and purified by 67 % ammonium sulfate precipitation, deae - sepharose fast flow ion - exchange chromatography, and sephacryl column gel - filtration, and its biochemical and enzymological properties were identified in this study. it was found that the deduced molecular weight of he in sds - page is about 98. 5 kda, and its proteolytic activity was optimized at ph of 7. 5 - 8. 5 and at temperature of 40, respectively
我們利用67硫酸銨沉澱、 deae - sepharosefastflow陰離子交換柱層析和sephacryl凝膠過濾柱層析，並以酪蛋白為其蛋白酶水解活性的檢測底物、以卵膜為其卵殼裂解活性的特異性底物，從鹵蟲胚胎孵化液中分離純化出了鹵蟲的孵化酶分子，其在sds - page電泳中的分子量約為98 . 5kda 。分享友人