胚極 的英文怎麼說
中文拼音 [pēijí]
胚極
英文
embryonic pole-
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。Perfectly normal bipolar embryoids are formed.
形成完全正常的兩極胚狀體。Two types of nondepolarizing - activated calcium channels on the spinal cholinergic neurons from embrynoic xenopus laevis
爪蟾胚胎脊髓膽堿能神經元上兩類非去極化激活的鈣通道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。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。A sufficient condition is given for a homeomorphism with the the average shadowing property to be minimal. in section 3. 3, we prove that if / has the potp and is equicontinuous, then / has the limit shadowing property
2節討論了平均跟蹤與偽軌跟蹤的關系，並給了有平均跟蹤的自同胚是極小的一個充分條件。This deposit contains tiny soft - bodied adult sponges and cnidarians as well as minuscule eggs and embryos
此沉積中存有微小的成熟海綿及刺絲胞動物，還有極微小的卵與胚。Avian encephalomyelitis virus ( aev ) is a picornavirus with a predilection for the central nervous system and other parenchymous organs of chickens that is transmited by the oral - faecal route. the virus may be spread by the vertical and horizontalroutes, and because of its great stability, contaminated areas may remain infectious for long periods. the egg - adapted van roekel strain is highly neurotropic and does not grow efficiently in the enteric tract of the chicken, and the field isolates of aev is usually enterotropic. despite this. the virion polypeptides of both naturally - occurring strains and the van roekel strain are antigenically identical
侵害雞的中樞神經系統和其它實質性器官，該病毒通過口-糞途徑傳播，具有水平和垂直傳播的能力。由於它極大的穩定性，被污染的區域可能長期保持傳染性。雞胚適應株vanroekel是高度嗜神經的，並且在雞的腸道內不能有效的生長，而野毒株卻是嗜腸道型的。The influence of the first polar body position at intracytoplasmic sperm injection on fertilization and embryo development
第一極體位置對卵母細胞顯微注射受精后受精和胚胎發育的影響3. oxygen exhausting of mouse embryos there was very low oxygen exhausting in unfertilized oocytes
胚胎發育過程中氧消耗的測定用氧電極法測定胚胎培養液中氧氣的濃度。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。Let / be a diffeomorphism on a riemannian manifold. in this paper, we study the limit shadowing property of /
設f是riemann流形上的一個微分同胚，本文研究了f的極限跟蹤性。One fuses with the egg cell to form a zygote while the other either degenerates or, in certain angiosperms, fuses with the polar nuclei to give the primary endosperm nucleus
一個與卵細胞結合形成受精卵，另一個要麼退化，要麼在某些被子植物中與極核結合形成初生胚乳核。Double fertilization the fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus
雙受精：指花粉粒中的一個精子與胚珠中的卵細胞結合形成受精卵，另一個精核與極核結合形成三倍體的胚乳核。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。However, a small minority of angiosperms that perform apomixsis can overcome the effect of genomic imprinting to normally develop its endosperms without fertilization or with false fertilization
然而極少數進行無融合生殖的被子植物，它們的胚乳可以在假受精或不受精的情況下克服基因組印記效應的影響且正常發育。Detailly, it was ( l ) to isolate and construct high efficiency expression vector of rice starch branching enzyme gene sbe2b and ( 2 ) to establish a high - effecient rice transformation system. total rna was extracted from maize endosperm 15dap ( days after pollination ). and cdna of sbe2b was obtained through rt - pcr. sequencing result showed that the full length cdna was 2. 4kbp, coding for 800 amino acids, with estimated mw 93kd
本研究從授粉15天左右的玉米胚乳中提取了總rna ，採用rt - pcr方法，克隆了玉米胚乳的澱粉分支酶基因sbe2b ，測序結果表明，玉米胚乳sbe2b的cdna全長為2 . 4kb ，編碼800個氨基酸，推測的氨基酸的分子量為93000d ，該序列與genbank中登錄號為af072725的玉米sbe2b的cdna序列有98的同源性，與水稻、大麥、小麥等禾本科植物的有關澱粉分支酶的dna序列都有極高的同源性。When a pollen grain germinates, a pollen tube pushes its way out through an aperture in the pollen grain wall, and the nuclei migrate into the tube
生殖細胞核分裂，形成兩個僅由細胞核和細胞質構成的精子，其中一個將與卵受精，另一個則與極核融合形成胚乳核。Meanwhile, oxygen concentration of culture medium containing embryos decreased with time ( p < 0. 0001 ). with the development of embryos, oxygen exhausting rate trended to increase
未受精卵耗氧極低，而胚胎培養液中氧的濃度直線下降（ p 0 . 0001 ） ，而且隨著胚胎的發育耗氧率有上升的趨勢。The company ' s mainly produces are molybdenum special type parts, molybdenum powder, molybdenum electrode, molybdenum mandrels, molybdenum crucible, molybdenum bars, molybdenum bars, molybdenum pole, molybdenum rods, tungsten powder, tungsten rod, tungsten bars, tungsten bars, tungsten electrode, tungsten crucible and so on
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