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外层细胞
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  “外层细胞”译为未确定词的双语例句
     And the half maximal inactivation voltages were(-97 38±5 42),(-115 83±6 16),(-122 00±5 82),(-128 83±3 13)mV.The recoveries of I Na inactivation in epicardium were slightly decreased,but without a statistically significant difference ( P >0 05).
     缺血后失活曲线左移 ,失活半电压在缺血前及缺血后 10、2 0、3 0min于外层细胞 (n =18个细胞 )依次为 ( -97 3 8± 5 42 )、( -115 83± 6 16)、( -12 2 0 0± 5 82 )、( -12 8 83± 3 13 )mV ,缺血前后比较有显著差异 (P <0 0 5 )。
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     P63 expressed mainly in the nucleus of the basal cells of excretory duct.
     P63蛋白主要表达在排泄管的外层细胞
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     Results There are two cell layers and cell types in amnion which are the inner layer of flat polygon cells and the outer layer of elongated spindle cells,respectively.
     结果 羊膜由两层不同类型的细胞组成 ,内层细胞为多边形扁平细胞 ,外层细胞为长梭形细胞 ;
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     The inner cell layers of tubuloglandular components had distinct epithelial features,expressing keratin,carcinoembryonic antigen (CEA) and epithelial membrane antigen (EMA).
     管腺内层细胞有明显上皮特征,其角蛋白、癌 胚抗原(CEA)及上皮细胞膜抗原(EMA)均阳性,而外层细胞对结蛋白(Desmin,Des)、肌动蛋白 (Actin)、CEA及EMA呈阴性,对波形蛋白(Vimentin,Vim)。
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     The results of cytological observation showed that somatic embryogenesiswas originated from the outer cells of embryonic callus where the cells richly contained starch grains.
     细胞学观察表明,文冠果体细胞胚源于胚性愈伤组织的外层细胞,此区域细胞富含淀粉粒。
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     P63 expressed mainly in the nucleus of the basal cells of excretory duct.
     P63蛋白主要表达在排泄管的外层细胞
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     that exo-layer cells of endosperm were transfer cell-typed cells;
     胚乳外层细胞为传递细胞细胞
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     Cellular Spectro-Analysis
     细胞光谱分析
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     Tom Clancys Splinter Cell
     细胞分裂
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  enveloping cell
We conclude that for the duration of embryonic development the unique properties of the enveloping cell layer of A.
      
The innermost enveloping cell forms the "Sensillenliquorraum I", into which enter the dendrites and assume ciliary structure.
      
The third enveloping cell is the tormogen cell, it forms the "Sensillenliquorraum II".
      
The unique multi-layered nature of the middle enveloping cell is seen as a device for the formation of regularly occurring rows of small spines on the shaft of the hair.
      
In some families of Diplopods the midgut is surrounded by an enveloping cell layer.
      
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The cells of the apical ectodermal thickening, neighboring ectoderm and underlyingmesenchyme of the limb buds of mouse embryos, 11--13 days vaginal plug age, wereused for this study. Most of the specimens were fixed in 1% osmic acid in veronalacetate buffer, pH 7.6, 4℃, 1 hour and embedded in methylchrylate. Parts of the speci-mens were either fixed in potassium permagnate or stained in lead hydroxide after osmicacid fixation. Observations and photographs were made under SEM Ⅲ electron micros-cope. The Golgi...

The cells of the apical ectodermal thickening, neighboring ectoderm and underlyingmesenchyme of the limb buds of mouse embryos, 11--13 days vaginal plug age, wereused for this study. Most of the specimens were fixed in 1% osmic acid in veronalacetate buffer, pH 7.6, 4℃, 1 hour and embedded in methylchrylate. Parts of the speci-mens were either fixed in potassium permagnate or stained in lead hydroxide after osmicacid fixation. Observations and photographs were made under SEM Ⅲ electron micros-cope. The Golgi apparatus appeared to be horse-shoe shaped in the apical ectodermalthickening and S-shaped in the neighboring ectoderm. It consisted of small vesicles andtubules without any large vesicle. The mitochondria in the neighboring ectoderm were usually round or oval in shape,with fewer and irregular cristae and lighter matrix. The mitochondria of the mesenchy-mal cells were even more embryonic in structure with only 2--3 oblique cristae and alarge inner chamber. The mitochondria in the supperficial layers of the apical ectoder-mal thickening were more or less similar to those in the neighboring ectoderm. Rod-shaped and filamentous mitochondria increased in number in the deeper layers of theapical thickening. Such filamentous mitochondria had vertical cristae, denser matrix andoval and light inner chambers. Transitional stages between the very small vesicles withvague cristae and the large mitochondria with distinct cristae were found in our leadstained preparations. Except in the Golgi region, ribosomes grouped into ring or tubular forms weredistributed all over the cytoplasm in the three kinds of the embryonic cells studied.Transitional stages between such ribosome clusters and the granulated vesicles and tubulescould be clearly demonstrated in the lead stained specimens. In the apical ectodermal thickening, granulated endoplasmic reticulum in the formof scattered small vesicles and tubules seemed to be more abundant than in the neighbor-ing ectoderm and underlying mesenchymal cells. But the most striking difference foundin the apical thickening was the expansion of the granulated endoplasmic reticula intolarge saccules, the cisternae of which containing a grayish dense substance. Another interesting phenomenon found in the apical ectodermal thickening was thepresence of dense bodies in the cytoplasm. They were in various sizes and densitieswith dense granules, masses or cords and various forms of vesicles. They might be round,oval or irregular with a complete, partial or entire absence of limiting membrane. Thosewithout membrane were usually irregular in form and could hardly be demarkated from their surrounding cytoplasm whence assembly of ribosome clusters, mitochondria andendoplasmic reticulum from the surrounding cytoplasm to form the dense bodies could befound. Preliminary histochemical studies found them to be positive in alkaline and acid-phosphatases and RNA staining. They were therefore considered to be lysosomes orcytosomes. The significance of the differences in mitochondrial form and structure, abundantand expanded cisternae of the granulated endoplasmic reticulum and the presence of thedense bodies in the apical ectodermal thickening in relation to embryonic differentiationof the limb was discussed.

用小白鼠胚胎阴栓日龄11—13天的前肢芽和后肢芽,锇酸固定,甲基丙烯酸甲酯及甲基丙烯酸丁酯包埋,在SEM Ⅲ型电子显微镜观察了肢芽尖端增厚外胚层、邻近普通外胚层及间充质细胞。部分材料用过锰酸钾固定或锇酸固定后氢氧化铅染色。各种细胞相互比较的结果如下: 1.两种外胚层的高尔基体极相似,均由小泡及小管组成,无大泡,横切时成为成群的小泡。普通外胚层细胞的高尔基体呈S形,增厚外胚层的马蹄形。 2.线粒体在普通外胚层卵圆形或圆形,嵴不整齐。增厚外胚层的线粒体在浅层细胞少,结构与普通外胚层相似,但愈至深层则细长的线粒体愈多。细长线粒体的嵴较密,亦较整齐,与表面垂直,基貭亦较致密。在尖端增厚外层细胞见到由胞质新形成的小泡过渡到小圆的线粒体。 3.无论在普通外胚层下或在尖端增厚外胚层下的间充质细胞,其线粒体的形状和结构相同,都是圆或卵圆,嵴少而靠近表面作半月状,内室大,基貭密度低,属比较原始的胚胎型。 4.嗜碱质在两种外胚层及间充貭细胞均以弥散的核朊粒为主,由5—10余粒组成小群落。这些群落在尖端增厚外胚层较大、较密,粒亦较多。普通外胚层细胞的有粒内貭网或动貭较间充貭为多,二者均系胚胎型,是分散的小泡或小管。尖端...

用小白鼠胚胎阴栓日龄11—13天的前肢芽和后肢芽,锇酸固定,甲基丙烯酸甲酯及甲基丙烯酸丁酯包埋,在SEM Ⅲ型电子显微镜观察了肢芽尖端增厚外胚层、邻近普通外胚层及间充质细胞。部分材料用过锰酸钾固定或锇酸固定后氢氧化铅染色。各种细胞相互比较的结果如下: 1.两种外胚层的高尔基体极相似,均由小泡及小管组成,无大泡,横切时成为成群的小泡。普通外胚层细胞的高尔基体呈S形,增厚外胚层的马蹄形。 2.线粒体在普通外胚层卵圆形或圆形,嵴不整齐。增厚外胚层的线粒体在浅层细胞少,结构与普通外胚层相似,但愈至深层则细长的线粒体愈多。细长线粒体的嵴较密,亦较整齐,与表面垂直,基貭亦较致密。在尖端增厚外层细胞见到由胞质新形成的小泡过渡到小圆的线粒体。 3.无论在普通外胚层下或在尖端增厚外胚层下的间充质细胞,其线粒体的形状和结构相同,都是圆或卵圆,嵴少而靠近表面作半月状,内室大,基貭密度低,属比较原始的胚胎型。 4.嗜碱质在两种外胚层及间充貭细胞均以弥散的核朊粒为主,由5—10余粒组成小群落。这些群落在尖端增厚外胚层较大、较密,粒亦较多。普通外胚层细胞的有粒内貭网或动貭较间充貭为多,二者均系胚胎型,是分散的小泡或小管。尖端增厚外胚层的动貭有独特形态,即池的一端扩张成大泡,内含网状致密物,显然含有较多的,要不是特异的蛋白貭。这种扩张动貭对于胚胎分化及诱导的关系曾加讨论。 5.动质的形成有证据表明是先从核朊粒群落出现膜成为动貭小泡或小管,再并合成较大的小泡和较长的小管。 6.增厚外胚层细胞的另一特点是比较普逼的存在着形状、大小及密度不同的致密体。有的完全致密,有的泡状,有的是二者的混合体,有的界限清楚,有的处于分散状态。在形态上类似溶酶体和卵子的多泡体。内含类似核朊粒的致密粒、退化线粒体及动质膜。这些致密体和细胞膜、核膜及高尔基体未显有何关系。基膜及细胞膜完好。未见增厚外胚层细胞有排出、吞食或饮液现象,亦未见致密体排至中胚层,故认为这些致密体起于胞貭。对于分化诱导关系曾提出讨论。 7.细胞核及核膜在三种细胞未见有显著不同。核膜有孔,其外膜可与动貭膜相连,核仁小,紧靠核膜,未见有排出现象。氢氧化铅染色的标本有时显示染色貭有微丝,这在胞貭核朊粒群落亦可出现。 8.细胞膜完整,比较直,膜的内侧有一层致密物貭,无桥粒。

RGL-induced agglutinations have been found in mature and immature rice embryo cells as well as their suspended callus cells. Isolated cells from leaves or roots of rice seedlings and mesophyll protoplasts from tobacco and barley were also agglutinated by RGL. All these agglutinations were specifically inhibited by N-acetyl glucosamine. But the inhibitory effect in callus cells from the radicle of the immature embryo is negligible. The results suggest that the common sites for RGL-specific binding are on the...

RGL-induced agglutinations have been found in mature and immature rice embryo cells as well as their suspended callus cells. Isolated cells from leaves or roots of rice seedlings and mesophyll protoplasts from tobacco and barley were also agglutinated by RGL. All these agglutinations were specifically inhibited by N-acetyl glucosamine. But the inhibitory effect in callus cells from the radicle of the immature embryo is negligible. The results suggest that the common sites for RGL-specific binding are on the cell surface of these plants. The glycoprotein molecules of the radicle callus cells show some differences from the plumule callus cells. It appears that a close evolutionary relationship exists among the lectins of these plants, including Gramineae and Solanaceae.

稻胚凝集素(RGL)对稻胚、稻苗叶、根细胞,以及稻幼胚胚芽、胚根愈伤组织悬浮细胞都有凝集作用,RGL对元麦及烟草叶原生质体也能凝集。N-L酰葡萄糖胺(GlcNAc)有抑制RGL对细胞的凝集作用,但对胚根愈伤组织细胞的抑制效应不明显。水稻等细胞表面具有能与RGL专一结合的位点,只是胚根和胚芽愈伤组织细胞表面的糖蛋白分子有一定差异。RGL对水稻、元麦及烟草的细胞或原生质体的凝集效应不存在种间的专一性。RGL含量随胚的分化发育而不断增加,成熟中后期胚内RGL含量达到成熟时程度;胚芽鞘细胞中RGL分布广泛,胚芽、胚根的外层细胞显色深于内层,早期的胚乳细胞、子房内层、珠被、珠心细胞中均有RGL显色反应,但它的糖结合专一性与成熟胚RGL可能不同。

There are some anatomical differences of the pistil and stamen bet- ween wild sugarcane and its closely related plants.The exine surface of Saccharum spontaneum L.is characterized by hilly protrusions;and that of Saccharum arundinaceum Retz.is characterized by small protrusious of uni- form size and shape,while the exine surface of Narenga porphyrocoma only appears tortoise-shelled sculptures. The upper parts of the inner integument of S.spontaneum L.,Erianthus fulvus Nees and N.porphyrocoma consist of two layers...

There are some anatomical differences of the pistil and stamen bet- ween wild sugarcane and its closely related plants.The exine surface of Saccharum spontaneum L.is characterized by hilly protrusions;and that of Saccharum arundinaceum Retz.is characterized by small protrusious of uni- form size and shape,while the exine surface of Narenga porphyrocoma only appears tortoise-shelled sculptures. The upper parts of the inner integument of S.spontaneum L.,Erianthus fulvus Nees and N.porphyrocoma consist of two layers of cells,of which the outer layers are fiat in shape,and the inner layer apparently enlarges in volume radially,but the inner integument of S.arundinaceum composes of two layers of flat cells without radial enlargment. The characteristics mentioned above would be valuable to identify the taxonomic position of S.arundinaceum.

在野生甘蔗及其近缘植物之间,雌、雄蕊存在着一些解剖学上的差异。割手密的花粉粒外壁表面具丘状突起,斑茅的花粉粒外壁表面具均匀的小乳突,河八王的则具龟裂状花纹。割手密、蔗茅和河八王的上侧内珠被由二层细胞组成,其外层细胞极扁平,内层细胞明显地径向扩展。唯独斑茅的内珠被是由二层极扁平的细胞组成,无径向扩展的现象。以上的特点,对斑茅分类地位的探讨将有参考价值。

 
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