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The two neck cells of the archegonium divided to fo rm four neck cells before fertilization, this division happened prior to the div ision of the central cell, but at times they divided synchronously.

颈卵器的2个颈细胞在受精前进行一次斜向分裂形成4个颈细胞,此分裂一般早于中央细胞的分裂,偶尔也可见颈细胞和中央细胞同时分裂。

Under SEM, the cuticula membrane of the leaf epidermis is distinct, and granular, reticulate, scaly or papilliform in shape. The stomatal apparatus is of paracytic type and occurs only on the lower surface.

气孔器几乎全部生在下表皮,有些种气孔下陷,气孔器一般是一对保卫细胞和一对副卫细胞平列。

Moreover,the othervariants,for example,single egg situated in far from micropyle part,double antipodaland antipodal replacement egg apparatus.

此外还观察到其他一些变异结构,如单卵异位、单卵双套反足细胞和反足细胞团取代卵器形成"假卵器"等。

Objective To investigate the existence of the erythropoiesis inhibitors and the different effects of high-flux dialyzer and low-flux dialyzer on the clearance of EI.And to observe the effects of uremic patients sera and the ultrafiltrate from F80 and F6 dialyzer on CFU-E and BFU-E colony groewth of normal mice bone marrow.

目的 本文采用甲基纤维素细胞培养的方法,分析尿毒症患者血清及超滤液对小鼠骨髓红系造血祖细胞集落形成的影响,初步探讨红细胞生成抑制因子的存在、其相对分子质量大小及高通量透析器与普通低通量透析器对其清除的不同影响。

The leaf epidermis structures of 6 species of Rhododendron had been observed under LM and SEM. The results show that all share together common features as follows: the leaf blades are typical back-abdomen bifacial types, the upper epidermis are formed by two or three layer bigger cells which inside layer cell is bigger than outside one, and the upper epidermis are covered with thicker cuticle.

利用光学显微镜和扫描电子显微镜观察了6种杜鹃属植物的叶片结构,结果表明,它们具有共同形态结构特征:典型的异面叶,上表皮由2~3层细胞组成,内大外小或内、外等大,有较厚的角质膜,无气孔器分布;下表皮均由1层细胞组成,排列紧密;栅栏组织由2层以上长柱形细胞组成,排列紧密;海绵组织细胞较短,排列较疏松,细胞间隙较大;均有表皮附属物。

The results by invert embedding TEM showed that higher invasive CCL229cells had vast of ER,which distributed throughout cytosol especially largeamount of vesicle-like and flatten cisternal rER in pseudopodia or cell processesand membranous flow-like structure from perinuclear region to pseudopodia,and less Golgi complex.

倒置包埋法常规透射电镜对人大肠癌细胞的超微结构观察结果显示,高侵袭力的CCL229细胞中内质网数量较多并呈全细胞分布,尤其在细胞伸出的众多伪足中含有丰富的小泡状和扁平囊样粗面ER结构,而且观察到由小泡形成的&膜流样&结构从核周一直深入到伪足中,但细胞中高尔基器少见。

An electron microscopic study of resting cysts and their organelles in Paraurostyla weissei has revealed that:⑴The cyst wall is composed of four layers named from outside to inside:ectocyst,mesocyst,endocyst,and granular layer.The granular layer is delimited by the cell pellicle.Both the layer and pellicle contain a few vesicles.

为研究纤毛虫休眠状态下细胞的分化及其胞器的特征,本文以透射电镜术显示,魏氏拟尾柱虫休眠包囊中,颗粒层壁内有小泡,表膜位置也偶见小泡样结构,大部分线粒体以多个相互聚集在一起,自噬泡将线粒体等胞器包裹在内经历消化过程,细胞内膜系统十分发达。

According to the variance analysis, the differences have significance. This period happened to be the time when haustorial mother cells came into being, which indicated that the secretion of the enzymes had something to do with the haustorial mother cells, and played a certain role when the hypha penetrated the cell wall of wheat.

此时恰好是吸器母细胞开始大量形成之时,说明细胞壁降解酶的分泌可能与吸器母细胞的形成有关,在条锈菌穿透寄主细胞壁过程中具有一定的作用。

Lots of starch grains in nucellar cells and integumentary cells surrounding endosperm haustoria decreased and disappeared with the development of endosperm haustoria.

随着胚乳吸器的发育,吸器附近的珠心细胞和珠被细胞中贮存的大量淀粉粒逐渐减少和消失。

We initiated a genetic screen for Drosophila olfactory genes by means of SG18.1-Gal4/UAS system: The result validates our screen as an rapid, effective approach for recovering genes controlling glomerular map patterning; From a misexpression screen of 1,515 P{GS} lines, we identified 23 genes that, when forcibly expressed in the olfactory receptor neurons, disrupted the stereotyped anatomy of the Drosophila antennal lobes; These genes, which have not been shown previously to control olfactory map development, encode novel proteins as well as proteins with known roles in axonal outgrowth and cytoskeletal remodeling.

本文首次利用SG18.1-Gal4/UAS基因筛选系统对果蝇嗅觉基因进行了筛选和鉴定:结果表明,所采用的方法可以快速、有效地分离到果蝇嗅觉相关基因;从1515株果蝇P{GS}品系分离到86株突变体,其中40株有明显表型,从中鉴定了23个基因,这些基因在ORN强迫表达时可以损坏果蝇嗅叶的固有结构;在筛选中发现的一些调节嗅觉图谱发育的基因可以编码新蛋白或编码参与轴突生长和细胞骨架重塑的蛋白;为了便于研究,根据基因的功能和所编码蛋白的特点,我们对分离到的基因进行了分类,即参与轴突引导和突触产生、调节转录、调节细胞骨架和功能未确定或未知的基因;并通过对嗅觉感觉器的检测发现,除了调节转录的基因外,其他基因对触觉器的数量和分布影响不明显。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?