助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   central cells 的翻译结果: 查询用时:0.163秒
图标索引 在分类学科中查询
所有学科
农作物
生物学
更多类别查询

图标索引 历史查询
 

central cells
相关语句
  中央细胞
     Results: Comparing lateral and central cells' area, perimeter and the same circle diameter,there were no significant differences between two sides of alar cartilages of medial crus 1/2 and middle crus.
     结果:内侧角1/2处与穹隆脚处膜边和中央细胞面积、周长、等效圆直径等测量值,健患侧间无显著性差异。
短句来源
     The glandular cells of 5-day old virgin female M. separata are arranged in one layer, among which the central cells are columned and the nucleus is elliptical.
     羽化后5天未交尾雌蛾,腺体细胞呈单层排列,中央细胞为柱状,细胞核为椭圆形。
短句来源
     THE CYTOCHEMICAL CHANGES OF IN VIVO AND IN VITRO DEVELOPED UNFERTILIZED CENTRAL CELLS IN NICOTIANA TABACUM
     烟草中央细胞体内与离体发育中的细胞化学变化
短句来源
     But the positive reaction of keratin was found in inner cells of tubular and central cells of trabecular patten.
     而小管的内层细胞和小梁中央细胞呈角蛋白阳性。
短句来源
     A mature embryo sac is composed of egg apparatuses (two synergids and one egg cell), central cells and three antipodal cells.
     成熟胚囊包含卵器(由两个助细胞、一个卵细胞组成),中央细胞及三个反足细胞。
短句来源
更多       
  “central cells”译为未确定词的双语例句
     Immunophenotypically, these cells were positive for CD45RO, CD3, CD4, and CD8. The follicular dendritic cells (CD21+) were conspicuous and the follicular central cells(CD23+) were deficient.
     免疫组化标记示淋巴结内弥漫性浸润的细胞胞质表达CD3、CD4 5RO、CD4、CD8,增生的滤泡树突细胞表达CD2 1,CD2 3阳性的中心细胞稀少。
短句来源
     BACKGROUND:The experiments found that the cellular growth and proliferative ability in the central area of the tendon were poorer than those of epitenon cells and partial peripheral endotenon cells after tendon injury. However,how are the abilities of division and proliferation as well as the self healing ability of the central cells in the tendon?
     背景:实验发现,在肌腱损伤后,腱中心部分细胞生长增殖能力不如腱外膜细胞和周边部分腱内膜细胞,肌腱中心部位细胞的分裂增殖能力及自愈能力究竟如何?
短句来源
     Results Fas,FasL,and caspase-3 were expressed in 35((89.7%)),34((87.2%)),and 24((61.5%)) cases of ameloblastomas,respectively. More intensive reactivity were observed in the central cells of tumor nests,especially those exhibiting squamous metaplasia or granular transformation. Apoptotic cells detected by TUNEL method also tended to situate in such areas.
     结果39例成釉细胞瘤中分别有35(89.7%)、34(87.2%)及21(61.5%)例表达Fas、FasL和caspase-3,阳性染色主要分布于上皮岛中心呈鳞状化生和颗粒变性的细胞,TUNEL法标记的凋亡细胞也集中于这些区域。
短句来源
     ① Expressions of PCNA, Ki-67 , CK10&13 and CK19 were detected in 43 ameloblastoma by SP immunohistochemical method , and investigate whether there existed difference between the peripheral cells and central cells of tumor nests or strands. ② 17 cases of malignant ameloblastoma were examined by HE, AgNOR, DNA staining and morphometric analysis. The quantitatively pathological diagnosis was carried out on malignant ameloblastoma.
     ①应用免疫组化SP方法检测43例成釉细胞瘤标本组织中PCNA、Ki-67、CK10&13和CK19蛋白表达,以探讨肿瘤细胞巢周边区和中心区细胞增殖和分化的差异。
短句来源
     14 days later, the attached cells were identical with bone marrow mesenchymal cells in morphology, and covered with the whole monolayer, with the central cells arranged tightly.
     14d后贴壁生长细胞基本长满单层,中心细胞排列紧密,形态与骨髓间充质干细胞相似。
短句来源
更多       
  相似匹配句对
     U cells.
     Li/TK细胞3d,即可将其杀死.
短句来源
     Stem cells in the central Nervous System
     中枢神经系统的多能干细胞
短句来源
     All cells were put in nodule and with central necrosis.
     结果组织学表现为肿瘤细胞由恶性上皮样细胞和梭形细胞组成,呈结节样排列并伴有中心坏死。
短句来源
     LoVo cells,b.
     LoVo细胞组b.
短句来源
     Mincom Central
     明科中心
短句来源
查询“central cells”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  central cells
The large central cells gradually disintegrated, forming a pseudolumen.
      
Decrease in the mitochondrial potential in the central cells in large spheres, presumably caused by insufficient diffusion of oxygen and nutrients, can provoke their damage and death.
      
In central cells, the latter two reaction products were also seen in secretory granules and the cytosol.
      
Diffuse acid phosphatase and β-glucuronidase reaction products were seen in central cells of the submandibular acini, and diffuse non-specific esterase reaction product was seen in acinar and ductal cells.
      
Elements usually grew by apical elongation without widening; after simple apical elongation adjacent parts of two central cells eventually started to grow, resulting in the separation of the element into two.
      
更多          


Summary It is hard to obtain seeds from Pinus koraiensis crossed with P. tabulae for mis. According to the cytological investigations on both pines, the developments of each macrospore and microspore, the fertilization, the number of chromosomes and the causes of failure to get seeds, indicate that the incompatibility exists in these two species of pines. 1.The interval between pollination and fertilization of P. koraiensis is almost exactly 12 months, but that of P. tabulaeformis is 13 months. After the pollination...

Summary It is hard to obtain seeds from Pinus koraiensis crossed with P. tabulae for mis. According to the cytological investigations on both pines, the developments of each macrospore and microspore, the fertilization, the number of chromosomes and the causes of failure to get seeds, indicate that the incompatibility exists in these two species of pines. 1.The interval between pollination and fertilization of P. koraiensis is almost exactly 12 months, but that of P. tabulaeformis is 13 months. After the pollination has taken place, both the pollens stay at the pollen chamber of the tip of nucellus and will germinate until the average temperature is above 22 pollinations take place while the female gametophyte is still in a free nuclear stage. The mitosis of the central cell and the body cell of the pollen tube are at the some time, which in P. koraiensis is 102 days before fertilization, and which in P. tabulaeformis is 7days. 2.There is a big difference between the number of chromosomes of P. koraiensis and that of P. tabulaeformis. Chromosomes in the microspore mother cell of P. koraiensis is n=6, those of P. tabulaeformis is n=12; chromosomes in the endosperm cell of P. koraiensis is n=6, 70, those of P. tabulaeformis is n=12, n=14. As for the number of chromosomes the crossing of P. koraiensis with P. tabulaeformis is rather difficult. 3.The main cause of the incompatibility between P. koraiensis and P. tabulaeformis is the pollen of P. tabulaeformis showing poor or no germination in the nucellus of P. koraiensis. The ovule of P. tabulaeformis stopped its development at the free nuclear stage and is similar to the development of the ovule of P. koraiensis which is not fertilized.

紅松和油松杂交是不易得到种子的。我們試图从研究紅松和油松的大、小袍子发育、受精过程、染色体数目,来寻求其杂交不孕的原因。試驗結果是: 1.紅松由传粉到受精間隔12个月,油松則間隔13个月。二者在授粉后,花粉貯存于珠心頂部的花粉室內,平均溫度約22℃时开始发芽。发芽的花粉在花粉室內越冬,翌春花粉管继续伸长,至6月中旬受精。 2.紅松和油松的染色体数目相差很大,紅松小孢子母細胞內n=6,油松小孢子母細胞內n=12;紅松胚乳細胞內n=6,个别的細胞內也有n=7,8,…,10的,油松的胚乳細胞內則是n=12,也有n=14的。由染色体数目差别之大,也可推知紅松和油松杂交是有困难的。 3.紅松和油松杂交不孕的主要原因是,油松的花粉不能在紅松的珠心上发芽。授以油松花粉的紅松,其胚珠发育至游离核时期即停止发育,与未授粉的紅松胚珠发育很相似。

The structure of the ovule and the development of the gametophytes in Fokienia, an endemic genus of Cupressaceae are described in some detail.Two wings, one small and one large, are developed along the micropylar end of the ovule and two resin canals are present in each of them.The material collected in the middle of April was already pollinated and the pollen began to germinate on the nucellus.The sterile cell, tube cell and spermatogenous cell have been formed in the tube in the first collection...

The structure of the ovule and the development of the gametophytes in Fokienia, an endemic genus of Cupressaceae are described in some detail.Two wings, one small and one large, are developed along the micropylar end of the ovule and two resin canals are present in each of them.The material collected in the middle of April was already pollinated and the pollen began to germinate on the nucellus.The sterile cell, tube cell and spermatogenous cell have been formed in the tube in the first collection of April 17.At the end of June the division of the spermatogenous cell results in two sperms of similar size and shape and the division plane is usually parallel to long axis of the pollen tube.Both sperms are effective in fertilization. 4096 free nuclei(actual counting, 3733—4224 ones)are produced through 12 times of repeated divisions of the functional megaspore, then cell walls appear among the free nuclei and cellular female gametophyte is formed.The number of archegonia varies from 6 to 16, mostly 9—12.The archegonial complex is enclosed by 2—3 layers of jacket cells.The neck cells are usually 4 in number, arranged in 1—2 layers.The central cell divides and results in the formation of one ventral canal nucleus and one egg nucleus.Fertilization takes place in the middle of the arche- gonium. The development of the gametophytes of Fokienia is more or less similar to that of Sabina.

福建柏花粉在4月中传粉。5月初,不育细胞、管细胞和精原细胞已经形成。6月底,精原细胞开始分裂,产生2个在大小和形态上都相似的雄配子。这两个精子都有授精的功能。福建柏起作用的大孢子,经过12次连续有丝分裂后,产生4096个(实际计算为3733—4224个)游离核,而后在核之间形成雌配子体胞壁。颈卵器数目为6—16个,多数为9—12个。复合颈卵器被2—3层套细胞所包围。颈细胞1—2层,共4个细胞。6月底,中央细胞分裂形成腹沟核和卵核。受精作用在卵细胞的中部进行。从配子体发育来看,福建柏属与圆柏属有许多共同之处。

Material of Fokienia hodginsii was collected in 1964 from Fengyangshan (alt.1000—1400 M)in Lungchuan county,Chekiang province. This paper deals with the fertilization in Fokienia.It includs the structure of male and female gametes as wall as the process of fusion of their nuclei and cytoplasm re- spectively. The division of the spermatogenous cell of Fokienia occurred by the end of June (1964)and two sperms similar in shape and size were formed when pollen tube rea- ched the top of archegonia.Two equalsperms...

Material of Fokienia hodginsii was collected in 1964 from Fengyangshan (alt.1000—1400 M)in Lungchuan county,Chekiang province. This paper deals with the fertilization in Fokienia.It includs the structure of male and female gametes as wall as the process of fusion of their nuclei and cytoplasm re- spectively. The division of the spermatogenous cell of Fokienia occurred by the end of June (1964)and two sperms similar in shape and size were formed when pollen tube rea- ched the top of archegonia.Two equalsperms look like two hemispherical bodies conjoin- ed togather.The sperm possesses cell wall and is about 65 μ in diameter.Its nucleus is rather large and about 45—50 μ in diameter.There is a nucleolus in the nucleus. Outside the nucleus the dense cytoplasm forms the deep colored zone,some 10 μ in thickness.This zone is separated from the nucleus by a narrow perinuclear zone,and from the plasmalemma by a marginal zone.The perinuelear zone is about 2 μ thick, and the mariginal zone is from 3 to 4 μ thick.Both zones have transparent cytoplasm. When the archegonium is formed,the central cell has a small nucleus which is located below the neck cells.At the middle of June(1964),the central cell divides to form the ventral nucleus and the egg nucleus.The egg nucleus sites primarily at the upper part of archegonium and has only one nucleolus.Then the egg nucleus in- creases gradually in size and moves to the central part of the archegonium.In ma- ture archegonium there are usually 4—5,rarely 6—7 nucleoli in the egg nucleus,each of them is about 15 μ in diameter.The egg cell in Fokienia hodginsii is about 500 μ in length.The female nucleus is larger than the male one.After egg cell matures, its cytoplasm increases gradually,while the central vacuole decreases gradually and almost disappears completely after fertilization.It is interesting to note that there are 1—2 dense cytoplasm masses at the upper or lower part of egg nucleus.The shape of the mass is similar to that of the egg nucleus but no membrane is formed.These cy- toplasm masses are about 50—70 μ in dianmter in some cases. The fertilization of Fokienia took place at the end of June when the growing tip of pollen tube had reached the top of the archegonium.Then the neck cells become disorganized and degenerated.It is possible that all the cytoplasmic contents of pollen tubes are released into the archegonium.Before fertilization,the cytoplasm around the sperms and sterile cell and tube nucleus are in front of these two sperms.Then the sperms separate from each other and come down into the cytoplasm of the egg. When the male nucleus contacts with the egg nucleus,both become flattened along their contaet surface.Then the nuclear membranes of both sperm and egg nuclei be- eome ultimately disintegrated.Thus the fusion process is complete.However,it is usually seen that the entire sperm nucleus does not sink into the egg nucleus in Fokie- nia,though the opposite is the case in an exceptional example.When the sperm nuc- leus passes into the cytoplasm of egg cell,its cytopasm is released inside the arche- gonium along with it.During the course of fusion of the male and female nuclei,the fertilized nucleus is surrounded by both female and male cytoplasm.Thus the male cytoplasm along with the peripheral cytoplasm of the egg cell invests the two nuclei lying in contact and forms a dense neocytoplasm.When the zygote divides,the neocy- toplasm is full of the starch grains and a dense cytoplasm sheath is formed. After fertilization,the fused nucleus moves toward the base of the egg cell.It seems that the movement of the fused nucleus is not a simple mechanical movement but turned over repeatedly toward the base of the archegonium.Sometimes the position of the sperm and egg nuclei makes a turn of 180°.At the same time the track of the fertilized egg nucleus with vacuoles in the archegonium may be traced. After zygote moves into basal part of the archegonium,first intranuclear mitosis occurs.The nuclear envelop of zygote disappears gradually at the telophase of the first mitosis.Then division of the free nuclei of proembryo follows. From fertilization to the stage of proembryo formation,the second sperm may sometines enter into the cytoplasm of the egg cell.Mitosis of the second sperm nucleus may take place(fig.17—18)in the upper part of the archegonium.In addition,there are often several supernumerary nuclei(as many as 7—8 in number)in the same egg cell.These nuclei are also surrounded by dense cytoplasm.They may persist for some time and be recognizable at somewhat later stages of the proembryo or even after the elongated suspensors are formed.In some cases,there are some cell groups above the upper tier of proembryo.These cell groups are also surrounded by dense cytoplasm. Either the supernumerary nuclei or cells are surrounded by the dense cytoplasm.Pro- bably they are derived from the mitosis or amitosis of the second sperm. Investigations on submicroscopic structures of sperm and egg in relation to the fer- tilization of Cupressaceae have been carried out extensively during the last decade.The fate of male cytoplasm has been debated for a long time and this problem attracted attention again in the nineteen seventies.At last the concept of neocytoplasm has been established soundly based upon the information from observation of electron microp- hotographs.The neocytoplasm is also visible under the light microscope though the components are not recognizable.The sperms of Fokienia are similar to those of Cupressus funebris,Juniperus communis,Sabina virginiana,Tetraclinis articulata,Cha- maecyparis pisifera as well as the genus Thujopsis and others.Two sperms are all effective in fertilization and this is the common phenomenon of the family Cupres- saceae.

福建柏精原细胞分裂后,产生两个形态和大小都相同的雄配子——精子;精子形成时,犹如两个相连的半球体,各具细胞壁。中央细胞分裂产生腹沟核和卵核,腹沟核形成后逐渐退化;卵核却迅速增大。6月下旬,精核在颈卵器中部或中上部与卵核相遇,进行受精作用。在精卵融合过程中,进入卵细胞的雄细胞质,逐渐包围受精卵,并与部分卵细胞质结合形成新细胞质。受精后,在新细胞质中,又呈现大量淀粉粒。当受精卵移到颈卵器底部时,合子开始进行第一次有丝分裂。在原胚和幼胚发育阶段,多余精核还可进入卵细胞,并进行有丝分裂,以致形成7—8个游离核。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关central cells的内容
在知识搜索中查有关central cells的内容
在数字搜索中查有关central cells的内容
在概念知识元中查有关central cells的内容
在学术趋势中查有关central cells的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社