胚囊核 的英文怎麼說
中文拼音 [pēinánghé]
胚囊核
英文
embryo sac nucleus-
The amniotic fluid and allantoic fluid of chicken embryo have been analyzed and the resonances of most substances in them were assigned by 1 - dimention and 2 - dimention nuclear magnetic resonance ( nmr ) methods. this work could be the basis of quantitative analysis of metabolites and studying the metabolites changing between the amniotic and allantoic fluid during the hatching process. also, it provided a new way to study the process of embryo developing
用一維及二維液體高分辨核磁共振( nuclearmagneticresonance , nmr )方法綜合分析了雞胚羊水和尿囊液的成分,對其中的大多數譜峰進行了歸屬,發現了一些未經報道的小分子代謝物,為研究胚胎發育過程中各個胚囊中體液的交換和小分子的代謝以及進一步對發育過程中代謝物含量變化的定量研究打下了基礎,並為研究胚胎發育的過程提供了新的思路。Antipodal cells the three haploid cells found in the embryo sac of seed - bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle
反足細胞:胚囊三次分裂形成卵細胞,助細胞和極核等,其中位於合點端的三個單倍體細胞稱反足細胞。Embryo has most commonly eight genetically identical haploid nuclei.
胚囊,普通具有8個遺傳上相同的單倍體核。It is concluded that embryo sac sterility was the main reason for highly stable seedless characteristic of lipeng no. 2 cultivar
因此,胚囊高度敗育是麗? 2號產生無核的主要原因。Observation by paraffin section showed that lipeng no. 2 embryo sac mother cells were almost entirely degenerated during megasporogenesis
切片觀察發現,麗? 2號胚囊母細胞在四核期已完全退化。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。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。The steady dead generation and time that was caused by the isolated virus was certain by chicken embryo which was inoculated on seven or nine days. the histopathological changs of the infectious stunting syndrom were studied by the way of ordinary paraffin section and he dying. the experimental result were as follows : the test proved that the changes of the chicken embryo were different in different stage. the chicken embryo dead in a week after it inoculated. the body was dropsy and hemorrhage. dead before it hatched out, the embyo body were dropsy, pale and slime. the liver was yellow and swolled, gallbladder ( vesica fellea ) was filled with bile. bursa and glandula thymus analosis. the kindey dropsy. bowel lamina were humble, dilatation. gas and yellow foam were filled the bowel. histopathological changes were that, in early stage, obvious changes of liver and kindey were dropsy, hemorrhage and necrosis. two types eosinophilic intranuclear inclusion bodies including large round and little granular were present in cells of the above organs. the obvious changes of bursa were dropsy, adverse folliiculated growth and little lymphocytes proliferating, 19 - 21 days chicken embryo, one or two big empty vacuoles were prensent in cells of liver and kindey. the number of the folliculi was growing, the vacuoles between cells were larger
膽囊充盈、其內充滿稀薄的膽汁;法氏囊、胸腺萎縮,腸道擴張、腸壁菲薄、內充滿氣體及黃色泡沫狀物;腎臟腫大。病理組織學變化方面,早期肝臟、腎臟、腸主要以出血、水腫和壞死為主,且肝細胞核及腎小管的上皮細胞核內均發現有核內包涵體,包涵體呈嗜酸性,為大型圓形包涵體或不規則的顆粒狀;法氏囊則以水腫、濾泡發育不良、小型淋巴細胞數量增多為主。 19 21日齡雞胚肝細胞、腎小管上皮細胞的胞漿內出現1 2各大的空泡,法氏囊濾泡數目增多細胞間有較大空隙。There were no significant difference in fusion rate, cleavage rate and blastocyte development rate with different enucleation time of oocytes during ivm16 - 24h ( p > 0. 05 )
在體外成熟16 24h期間,水牛卵母細胞去核時間的不同對核移植后的融合率,分裂率和囊胚發育率沒有顯著影響。The endosperm is usually triploid and develops from the primary endosperm nucleus, the triploid nucleus resulting from the fusion of one of the male gametes from the pollen tube with the polar nuclei in the embryo sac
胚乳通常是三倍體,由初生胚乳核發育而來,三倍體核來源於花粉管中的雄配子與胚囊中兩個極核的融合。The results showed that es cells derived from kunming albino mouse remained undifferentiated state when they were cultured in vitro for a long time, and karyotypies were stable, but the ability of germ - transmission have not been verified
結果顯示,用昆明白小鼠囊胚所建立的胚胎幹細胞在體外長期培養時仍能保持未分化的狀態,核型穩定,但還未證明其具有生殖系嵌合的能力。In order to establish the technique of isolating es cell, and test the developmental ability of reconstructed embryos derived from es cell and oocytes of intra - or inter - species, mouse es cell were isolated from mouse blastocysts, and were used as donor nuclear, and were transferred into oocytes of various strains. the factors that influenced the development of reconstructed oocytes were determined. the developmental ability of embryos reconstructed with mouse es cells and rabbit oocytes was observed and analyzed
為了建立胚胎幹細胞分離技術及了解其在同種和異種卵母細胞中的發育能力,首先從小鼠囊胚分離胚胎幹細胞,並以它作為核供體,移植到同種不同品系去核的小鼠卵母細胞內,觀察不同品系的卵母細胞對胚胎幹細胞重構胚發育的影響。Compared with the cytoplasts matured in the maturation medium directly for 16 ~ 18h, the fusion rate, cleavage rate and blastocyst development of reconstructed embryos from oocytes cultured in 2mmol / l 6 - dmap for 3 - 5h prior to ivm did not differ significantly from that of reconstructed embryos from oocytes matured in the maturation medium directly for 16 ~ 18h
水牛卵母細胞先經水牛卵母細胞孤雌激活與體細胞核移植的研究6 dmap抑製成熟培養3 sh ,再在正常成熟培養液中成熟培養16 18h 。結果發現,與直接在正常成熟培養液中成熟培養16 18h的卵母細胞相比,其融合率,分裂率和囊胚發育率均無顯著影響。分享友人