胚的 的英文怎麼說
中文拼音 [pēide]-
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。The cotyledons of the mature embryo are either green, yellow or chalky yellow.
成熟胚的子葉是綠色,黃色或淺黃色。The amino acid is depleted commensurate with the development of the growing embryo.
氨基酸的消耗是同生長的胚的發育相適應的。But cluster buds can not be obtained from the callus of stems and embryo. it has likely relate to the inner structure of callus. lt is very difficult to get embryoid from mature embryo and its inducing rate is very low, and only 11. 5 % in the media containing n6 + ba 1. 5mg / l + naa 0. 5mg / l + sucrose 30g / l + agar 8g / l + ac 2g / l which is the best media for gingo tissue culture
而莖段和胚誘導的愈傷組織基本上沒有叢生芽發生,這可能和不同愈傷組織的內部結構有關。成熟胚的胚狀體誘導率較低,誘導相當困難,在n6 baiHeat-denaturated wheat endosperm prevented the growth of an embryo implanted on it.
熱變性的小麥胚乳能阻止移植在其上的胚的生長。A complete enumeration of the types of embryos in each taxon is considerably beyond the scope of this work.
充分敘述每個分類單位胚的類型大大超出本研究的范圍。In vitro culture of mature embryos of ginkgo biloba l
銀杏成熟胚的離體培養研究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。Properties of topologically stable homeomorphism on compact manifold
拓撲穩定同胚的性質The present paper presents the chain recurrent set with the expansive homeomorphism and shadowing properties and this connection for the mistake in literature [ 1 ] and its proof
摘要給出具有跟蹤性可擴同胚的鏈回歸集的幾個性質,指出以往文獻中證明鏈回歸集無環性時的錯誤之處,並給出嚴格的證明。Abstract : the present paper presents the chain recurrent set with the expansive homeomorphism and shadowing properties and this connection for the mistake in literature 1 and its proof
文摘:給出具有跟蹤性可擴同胚的鏈回歸集的幾個性質,指出以往文獻中證明鏈回歸集無環性時的錯誤之處,並給出嚴格的證明The scientist has made a pointed comparison between suspensors of plant embryos and mammalian trophoblasts.
這位科學家把植物胚的胚柄與哺乳動物的滋養層做了直接的比較。These observations show that reprogramming is easier in interspecific embryos reconstructed with es cells than that reconstructed with somatic cells, and that es cells have the higher ability to direct the reconstructed embryo development normally than fibroblast cells. oocytes were reconstructed with outbreeding kunming albino mouse es cells and enucleated rabbit oocytes, and the effects of the passages of es cells and 6 - dmap on the development of interspecific reconstructed oocytes were analyzed. the interspecific reconstructed es - rabbit oocytes were activated either by combined two set electric pulses and 6 - dmap or by two set electric pulses
以上結果顯示, 6 dmap能增加胚胎幹細胞異種重構卵的卵裂率,對重構卵囊胚的發育率影響不大;高培養代數和低培養代數的胚胎幹細胞用於異種核移植不影響異種重構卵的卵裂率和囊胚發育率;用胚胎幹細胞作為供核細胞;比體細胞作為供核細胞所構建的異種重構胚更容易進行重編程,並且胚胎于細胞指導異種克隆胚胎正常發育的能力強于體細胞。If specific value of stained and all of seed plumule is greater than 2 / 3, we take it to be a vital capacity the seed
如果染色部分與整個種胚的面積比大於2 / 3 ,就認為此拉種子是有活力的。Then the zona and polar body of oocytes treated with drug were removed by transferring into the m2 containing 0. 5 % protease. the mouse fetal fibroblast cells were glued to the oocytes memb
該結果與重構胚的體外發育相符,表明正是這些己恢復微組裝功能的化學去核卵母細胞才對其供體核具有重編程的支持能力。The mice showed also ageing - associated decline in oocyte quality, as indicated by increased frequency of premature chromatid separation, spindle disruption and / or chromosome misalignments in mii oocytes of aged mice. the gv oocytes from aged mice normally matured in vitro. the percentages of pronuclear - stage embryos, 2 - cell embryos and blastocyst derived from mii oocytes of aged mice by in vitro fertilization ( ivf ) were comparable with ones of young mice, but pronuclei formed 1 h later in aged mice than in young mice
老齡小鼠gv期卵母細胞能正常體外成熟;老齡小鼠m期卵母細胞經體外受精后形成原核期胚、 2 -細胞期胚和囊胚的比率與年輕小鼠比較無顯著差異,但原核形成時間延遲1小時;在老齡小鼠卵母細胞,注射牛精子抽提物或sr ~ ( 2 + )處理時所誘發的ca ~ ( 2 + )振蕩以及在減數分裂成熟及早期胚胎中的pkc分佈未發生改變。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。For example, in the development of the plant embryo from the zygote, one end becomes the radicle, the other gives rise to cotyledons
例如植物由合子到胚的發育,一端形成胚根,另一端成為子葉。The virus was purified by ultracentrifuge. according to the ns gene sequence published by genbank, one primer t - 1 was designed to amplify the cdna by reverse transcript. the other primers nsl - u / ns1 - 1 and ns2 - u / ns2 - 1. hns2 - u were designed to amplify the ns1, ns2 and hns2 gene
本實驗用接種雞胚的病毒增殖方法獲得了a / chicken / mudanjiang / 0823 / 00 ( h9n2 )分離株的大量增殖,增殖病毒經差速離心進行純化,經超迷離心濃縮。The research consist of four parts. the first part is multiplication, purification and electron microscope examination of the avian encephalomyelitis virus. a 1 : 5 dilution of isolate - nh937 of aev and control group of pbs were inoculated to susceptible 6 - day - old chickens embryos. respectively. after incubation for 10 days, the urinay vesicle liquid was collected. making a comparison the size of the chickens embryos between the test group and the control group, the results showed that the size of the control group is bigger than that of the test group. purified virions were examined under the electron microscope, the result revealed that there are a lot of virions and the aev - nh937 was multiplicated in embryos. the second part was seguence analysis of the genome of the aev - nh937. nine pairs of primers were designed according to published calnek vaccine strain of aev
本研究共分四個部分:第一部分為aev的增殖,純化和電鏡觀察,用1 : 5倍稀釋的aev - nh937株和陰性對照pbs分別經卵黃囊接種於6dspf雞胚,繼續孵化10d后,收集尿囊液。比較接種組和健康對照組雞胚的大小,結果顯示,健康對照組雞胚明顯大於接種組。分離、提純aev ,把純化的病毒在電鏡下觀察,證明確有大量aev病毒粒子存在,說明aev在雞胚中成功擴增;第二部分是aev - nh937基因組的序列測定工作。分享友人