胚動 的英文怎麼說
中文拼音 [pēidòng]-
Others believed that they were formed from the "seeds" or "germs" of these animalcules.
另一派認為它們是從微小動物的「種子」或「胚」形成的。As we all know, bilateral symmetry, three - layer embryo, metamerism and having a relatively developed head are the common characteristics of the arthropoda and annelida, so it is believed that arthropod originated from annelid
由於節肢動物具備環節動物兩側對稱、三胚層、身體分節、頭部較發達等特徵,所以一般認為節肢動物起源於環節動物或類似環節動物的祖先。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。According to the mechanism of block of development in vitro culture on early embryo of mammal and in vivo surroundings of early embryo, the paper states that requirement and utilization of nutrients during each cell stage of early embryo of mammal in vitro culture in order to search for in vitro culture condition and method to improve the development rate of blastosphere
摘要從哺乳動物早期胚胎體外培養發育阻斷機理和早期胚胎的體內環境入手,闡述了胚胎體外培養各細胞階段胚胎對營養物質的需求,尋求合理的體外培養條件和方法,以便提高體外胚胎早期的囊胚發育率。G - banding the gtg banding ( g - banding ) was carried out by the standard trypsin method with slight modification, which works well for protochordate because a good number of reproducible g - bands are consistently obtained from the embryonic cells of late blastulae and early gastrulae of amphioxus b. belcheri tsingtauense
G帶型用稍作修改的標準的胰酶顯帶技術,進行gtg帶紋的顯示,它們能較好地顯示頭索動物青島文昌魚的晚期囊胚和早期原腸胚的中期染色體的g帶,並且重復性好。Chordates are bilaterally symmetrical, triploblastic, segmented coelomates which demonstrate a deuterostomic pattern of early embryonic development
脊索動物兩側對稱、三胚層,分節的體腔,在胚胎發育的早期過程中,顯示為后口類型。Ranging from 100 to 200 microns across, the width of several human hairs, these microscopic fossils are surprisingly complex and constitute almost a textbook example of a bilaterian, including the three major tissue layers ( the endoderm, mesoderm and ectoderm familiar from high school biology texts ), the presence of a gut with a mouth and anus, and paired coeloms ( body cavities ) surrounding the gut
這些微化石的大小為100 ~ 200微米,相當于幾根頭發的寬度, ?們看起來出奇復雜,而且簡直就像兩側對稱動物的教科書般,展示了各種特徵:包括三個主要的組織層(內胚層、中胚層及外胚層,都是中學生物課本中熟悉的名詞) ,前後連介面部與肛門的腸腔,腸腔外還圍繞著成對的體腔。Colugos resemble marsupials in that their young are born early in embryonic development
像有袋動物一樣,貓猴的寶寶在胚胎發育早期就出生。Wheat flour and durum wheat semolina. determination of impurities of animal origin
小麥粉和硬質小麥的細粒澱粉質胚乳.動物源雜質的測定Kinetin was later shown to be inhibitory for embryoid formation.
激動素原來被表明抑制胚狀體的形成。Hypertension has been reported with widely varying incidence in embryonal nephroma.
據報導,高血壓伴有胚胎性腎瘤的發病率變動極大。Since left colic flexure is a segment of embryonic hindgut and the splenic artery typically supplies the foregut, the condition in which an artery of foregut crosses midgut to supply an area of the hindgut becomes interesting
本例中變異之動脈發源自供應前腸之脾動脈,再跨越了胚胎中腸部份,而供應原屬於後腸發育出之結腸左曲,實為一種罕見的變異狀況。Its effects closely resemble those of the fsh and lh
用於雌性動物催情和促進卵泡發育;也用於胚胎移植時的超數排卵。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。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。Protein kinase a is camp - dependent kinase, one of the most important signal transduction pathways, plays a pivotal role in growth, differentiation, tumor occur, cell cycle control, etc. pka activators such as camp, 8 - br - camp or phosphodiesterase ( pde ) inhibitor isomethyl butyl xanthine ( imbx ) or purified pka catalytic subunit all can inhibit germinal vesicle breakdown ( gvbd ) and meiotic maturation in mouse oocytes, also in xenopus oocytes
蛋白激酶a ( proteinkinasea , pka )是依賴于camp的絲蘇氨酸蛋白激酶,是重要的信號傳導途徑之一,廣泛參與許多生命過程,包括生長、分化、腫瘤發生、細胞凋亡、細胞周期調控等。以小鼠卵母細胞為實驗對象,給予pka激動劑camp 、 8 - br - camp或磷酸二酯酶抑制劑imbx ( isomethylbutylxanthine )均可抑制小鼠卵母細胞的胚泡破裂及減數分裂成熟。It involves stimulation of ovaries by daily injection of gonadotrophin, egg collection through the transvaginal route under the guidance of ultrasound, fertilization in the laboratory and replacement of good quality embryos into the uterine cavity
整個療程包括每天到醫院打針刺激卵巢抽取卵子處理精子受精及胚胎移植等,各步驟均需夫婦主動及積極參與,難免面對生理及心理負擔。The results of biological tests have demonstrated that allantoic fluid of the first passage virus did n ' t produce macroscopic pathogenic role to chicken embryos and after passaged for four times, gross lesions were observed in chicken embryo. the virus showed typical coronavirus under electron - microscope and it could n ' t form plaque in cef cells and could hemagglutinates chicken red blood cells after treatment with 1 % trypsin. to surprise, the virus replicated in cef cells also showed hemagglutination activity to chicken red blood cells. in addition, the spf chickens which inoculated with the virus isolated from the chicken damaged tissue showed clinical sign and grow lesion, but it ' s gross lesion did n ' t resemble to those of field outbreaks
生物學特性:雞胚尿囊液經離心、磷鎢酸負染后,電鏡觀察該病毒為典型的冠狀病毒;該毒株的第一代尿囊液對雞胚無肉眼可見的致病作用,當繼代到第5代后,胚體嚴重病變;病毒在雞胚中隨著接種時間的延長,其效價增高, 96h可達到48h的2倍;該毒株可在cef上生長,但不能形成明顯的蝕斑;經1胰酶處理后可凝集雞紅細胞;雞胚的第四代尿囊液病毒回歸動物體,病死雞腎臟呈典型的花斑腎,腺胃則未見肉眼可見的病變。Thirdly, we consider the n - dimensional duffing type equation with damping term. by virtue of homeomorphism, extension and fixed point method, we discuss the existence of periodic solution under the nonresonance condition
再次,我們考慮n維的帶有阻尼項的duffing型方程,運用同胚延拓及不動點方法,討論了非共振條件下周期解的存在性問題。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。分享友人