胚胎形成 的英文怎麼說
中文拼音 [pēitāixíngchéng]
胚胎形成
英文
embryogenesis-
Embryological studies reveal that megaspore and such cells as egg, synergid and antipodals in mature embryo sac initiate the division of forming haploid plants through embryogenesis or callus formation
胚胎學觀察揭示大孢子與胚囊內的卵細胞、助細胞和反足細胞均有可能在培養中啟動分裂,通過胚狀體或愈傷組織形成單倍體植株。The researchers used fast neutrons to irradiate mouse embryos between the blastocyst stage and the beginning of somite formation.
研究人員用快中子照射在胚泡期和體節形成開始之間的小鼠胚胎。The protein nucleic acid complexes were identified by autoradiography for 48 h. the psg5heo and igfbp - 6 promoter pcat vectors were transfected into cos - 7 cells with iipofectamin2000 ; these cos - 7 cells where treated with 1 jxm e2, with lonm tcdd and with both lonm tcdd and 1 jxm e2, individually ; the cat protein was examined by cat - els a. results : the congenital skeletal defects in fetal rats were induced with 10 - 15ug / kg tcdd or with 100 - 140 mg / kg ra with dosage - dependence effect. the igfbp - 6 mrna in rat calvaria tissue and mc - 3t3 - el cells were increased with tcdd and ( or ) ra, whereas the cell proliferation and igf - 2 mrna in mc - 3t3 - el cells was decreased in the status of e2
結果: tcdd在大鼠胚胎發育時期具有骨骼致畸作用,骨骼發育畸形包括:內翻足、脊柱裂、顱面骨發育缺陷、無尾畸形等;隨著tcdd濃度的升高( 10一15林擴kg ) ,致畸率明顯上升( 14 . 7 %一24 . 6 % ) ; tcdd和ra聯合用藥可以增強對大鼠骨骼發育的致畸效應; e :對成骨細胞內igf一2基因有正性調節作用,對igfbp一6基因有負性調節作用, tcdd可以抑制e :對細胞內xgf一2和igfbp一6的調節作用。Using the mouse fetal ovary serum - free culture model, fetal ovaries from 14 day post coitus ( 14 dpc ) mouse were cultured, and treated by ay9944 - a - 7, nystatin and rs - 21745. the results showed that 0. 025, 0. 0625 and 0. 125 um ay9944 - a - 7 or 25, 50 and 75 iu / ml nystatin increased the total number of follicles per ovary significantly ; however, ay9944 - a - 7 and nystatin at the same doses could n ' t cause the same effect on the number of growing follicles and the average diameter of five largest follicles per ovary. 50 u. m rs - 21745 decreased the total number of follicles, the number of growing follicles and diameter of follicles per ovary significantly after 48 h
首先利用小鼠胚胎卵巢的體外無血清培養模型,培養妊娠14天( 14daypost - coitus , 14dpc )小鼠胚胎卵巢,分別添加能促進mas積累的ay9944 ,制黴菌素,和能抑制mas產生的rs - 21745進行處理,結果表明: 0 . 025 、 0 . 0625利0 . 125 m的ay9944 - a - 7與25 、 50和75iu ml的制黴菌素能顯著提高卵巢中形成卵泡的總數量,但是對生長卵泡數和卵泡直徑的作用不同;而mas合成抑制劑rs - 21745能夠顯著降低形成卵泡的總數量。It " s shown from the results that the pituitary gland of silurus asotus originates from two embryonic cells of different position ; and the doral wall of the original cavum oris forms the rostral pars distali ( rpd ) and the proximal pars distalis ( ppd ) ; the infundibulum of the ventral part of diencephalons forms the the pars intermedia ( pi ) and the neurohypophsis
結果表明:鯰腦垂體由兩個不同部位的胚胎細胞形成,原始口腔背壁外胚層分離出來的細胞構成腺垂體的前外側部( rpd )和中外側部( ppd ) ,從間腦腹面漏斗體分離出來的細胞構成腺垂體中間部( pi )及神經垂體( nh ) 。Eg cells of the 2th and 4th passage were akp ( alkaline phosphate ) positive. when cultured on degenerated feeder layers or in suspension, eg c ells formed embryoid bodies ( ebs ) in vitro
當eg細胞脫離飼養層懸浮培養,或在衰老的飼養層上延遲培養時,發現eg細胞或單個存在,或聚集成團,形成類似於早期胚胎的囊狀胚體結構This is the histologic pattern of embryonal carcinoma. sheets of blue cells are trying to form primitive tubules
胚胎癌的組織學類型,一片藍色的細胞正在形成原始小管。The neural tube then might induce the formation of still other embryonic structures.
神經管可能誘導其他胚胎結構的形成。The early embryo were made into a series of continuous section slides by tissue cutting. the sections were stained by hematoxylin and eosin ( h & e ) staining and then the development of internal organs such as heart in early embryos was observed by microscope. we found that there is certain relationship between external and internal malformation
同時我們收集人類藥物流產的早期胚胎,觀察發現胚胎畸形佔17 . 86 % ,早期致死佔32 . 54 % ;採用組織切片技術將胚胎製成一系列石蠟連續切片,染色后顯微觀察畸形和正常的早期胚胎內部心臟等器官的發育情況,發現胚胎外部畸形與體內畸形存在一定關聯,對此我們將做進一步的研究。During male gametogenesis, the spermatogonia became primary spermatozoa through mitosis, and then became fourth equivalent cytoplasm, round sperm through meiosis. after maturation, they participated in embryo development with the mature oocyte through fertilization. but in female gametogenesis, the primary oocyte formed a matured egg and 1 ~ 3 polar bodies ( pb )
雄性動物精子發生過程中精原細胞最後一次有絲分裂形成二倍體精母細胞后,經過兩次減數分裂形成了四個含等量細胞質、圓形的精子細胞,最終發育成四個具有正常生理功能的精子,與成熟卵母細胞受精后參與胚胎發育。All the possibilities of any life are in the germ.
形成任何生命的一切可能都在胚胎裏面。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。Abstract : the early embryo developmental block is a common phenomenon in mammal when embryos are cultured in vitro. many studies of phosphorus, glucose, hypoxanthine and cytoplasmic factors on early embryo developmental block carried out by different methods such as morphology, biochemistry, molecular biology and micromanipulation have been reviewed. the merit and shortcoming were analyzed and the necessity of using simple or components limited media overcoming early embryo developmental block were also reviewed. media that have been shown effective in overcoming early embryo developmental block in mouse, rat, hamster, rabbit, pig, sheep, cattle and monkey were listed
摘要哺乳動物胚胎在體外培養中普遍存在早期發育阻滯的現象.對此,人們用形態學、生物化學、分子生物學、顯微操作等手段開展了磷酸、葡萄糖、次黃嘌呤和細胞質因素對早期胚胎發育阻滯的影響的研究.本文綜合分析了共培養系統的優缺點.說明了採用完全成分已知的培養液對進行有關研究的必要性.列出了有效運用於克服小鼠、大鼠、倉鼠、兔、豬、羊、牛、猴等動物早期胚胎阻滯的成分已知的培養液的名稱。Docytes are formed during intrauterine life.
卵母細胞是在胚胎時期形成的。In order to understand how darwin builds a long argument to persuade readers to believe his evolutionary theory is better than creationism and lamarck ' s transmutation theory, one needs to know the emergence of this revolutionarily scientific theory is not only related to geology, paleontology, comparative anatomy, morphology, and embryology but also connected with his contemporary background of religion as well as economy
這門課擬從科學史的觀點,來帶學生閱讀與討論達爾文《物種源始》這本科學文本,了解此一個革命性的科學理論的生成,不但涉及地質學、古生物學、比較解剖學、形態學、胚胎學等自然學科,也關連到宗教、經濟等人文與社會面的諸多背景,進而認識達爾文如何在此書中建構論證與說服讀者相信他的演化論優于當時與其競爭的神創說和拉瑪克的理論。Mesenchyme - - embryonic c. t. with multipotential cells. the stellate cells are beginning to form fibers. sometimes cells are more spindle shaped. ground substance material is watery and invisible
間充質- - -胚胎時期結締組織,含有多種分化潛能的細胞這種星形細胞可合成纖維。有時細胞成梭形。基質成分呈水樣不可見。Furthermore the expressions of all the genes in a representative sample were examed by the recently developed method of hybridization to cdna arrays. this was intended to strengthen the theoretical background for the screening of norway spruce genotypes with low lignin content. the calli of the transformed sublines a78 - 3, a78 - 4, a78 - 5 and the untransformed control a95 : 88 : 22 were successfully induced to form mature embryos from which plantlets were established
以轉基因亞系a78 - 3 、 a78 - 4 、 a78 - 5和未轉基因對照a95 : 88 : 22的細胞愈傷組織為實驗材料,以dkm和lp - m熟化培養基培養五周后,再以1 4sh萌發培養基培養四周,成功地誘導形成了胚胎,並再生成新的小植株,萌發成活率達到80 。The growth factors and other signals required to complete tooth formation in an embryo most likely come from surrounding jaw tissue
胚胎形成牙齒所必需的生長因子與其他訊號,最可能是來自周邊的頜組織。More importantly , biotechnologists for the first time was able to manipulate the genes of cells from some animals directly before growing them into embryos
更為重要的是,生物技術第一次可以用來直接控制某些動物胚胎形成前的細胞基因。- 1, 4 - gt seems to play a multifunctional role hi normal cell physiology and has been associated with sperm - egg binding, cell - cell recognition, cell migration on basal lamina and neurite extension, embryonic maturation, rheumatoid arthritis, and cell development. hi this paper, it is studied on expression of the - 1, 4 - gt gene
細胞質膜上的- 1 , 4 - gt與精子的受精作用、胚胎形成、內分泌、神經元細胞的遷移、癌細胞的轉移、表皮細胞的增殖及自體免疫性疾病等方面都有著密切的關系。分享友人