分裂为四的

基本解释 (translations)

tetragenous

与分裂为四的相关的网络例句 [注：此内容来源于网络，仅供参考]

The anther possesses four microsparangia with its wall composed of four layers: epidermis, endothecium, middle layers and a 2\|nucleate celled tapetum.

绒毡层细胞在发育后期由单核分裂为2 核，多原位解体，为腺质型；但大约有12％小孢子囊的绒毡层在小孢子四分体释放时期进入花药室内，成为变形绒毡层。

The primary sporogenous cells divided into the second sporogenous cells which would turn into microspore mother cells in a microsporangium. The cytokinesis in meiosis of the microspore mother cells was of modified simultaneous type, forming the decussate, isobilateral or T-shaped tetrads.

初生造孢细胞分裂形成次生造孢细胞，次生造孢细胞再转化为小孢子母细胞，小孢子母细胞减数分裂的胞质分裂为修饰性同时型，四分体排列方式为交叉型、对称型或"T"型，成熟花粉粒二细胞型，开花时散出。

Small cell of the mother after the cytoplasm of simultaneous type, tetrad of epidermis, mature pollen of two cell types.

小孢子母细胞减数分裂后胞质分裂为同时型，四分体为四面体型排列，成熟的花粉粒为二细胞型。

Divi de the people into hostil e gro ups by co nsta ntly harpin g on controv ersial mat ters of no im portance.

四、经常性地对不重要的有争议事物煽风点火，将人民分裂为互相仇视的群体。

Mature pollen grain is of 2 - celled type .

花药壁的发育为基本型，小孢子减数分裂为连续型，小孢子四分体为四面体型，成熟花粉为二细胞型。

The primary sporogenous cells divided into the second sporogenous cells which would turn into microspore mother cells in a microsporangium. The cytokinesis in meiosis of the microspore mother cells was of modified simultaneous type, forming the decussate, isobilateral or T-shaped tetrads.

初生造孢细胞分裂形成次生造孢细胞，次生造孢细胞再转化为小孢子母细胞，小孢子母细胞减数分裂的胞质分裂为修饰性同时型，四分体排列方式为交叉型、对称型或&T&型，成熟花粉粒二细胞型，开花时散出。

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

Our study includes four aspects. In the first aspect we study several important conditions of porcine oocytes maturation in vitro and oocytes cleavage after parthenogenetic activation and found mNCSU-23+15IU/mlPMSG+20IU/mlHCG+15% PFF+0.57mMcysteine is a good culture condition .When the Cocs are cultured in it ,the maturation rate and oocytes cleavage rate are higher than those of foreign covered. Our result are (86.7±3.35)% and (86.3±4.16)% and the highest report of foreign is(85.7±4.1)%.In the second aspect we study the effect of different chemical activations on development of porcine parthennogenetic embryo and found two best activation method. The first one is that putting the maturation MII oocytes in the 20μmol/L ionomycin for 30 minutes and then putting them in the NCSU-23 condition containing 5μg/mICB and 5mM/L6-DMAP for 3.5 hours, the oocytes cleavage rate and morulae/blastocysts development rate are (76.7±7.6)% and (37.1±6.4)%.The second one is that putting the maturation MII oocytes in the 200μM/L Thimerosal for 20 minutes and then putting them in the NCSU-23 condition containing 8mM DTT for 30 minutes

本研究分为4个部分，第一部分对影响猪卵母细胞体外成熟和孤雌激活后胚胎分裂的几个重要条件进行了比较研究，确立了一种较好的培养方法：与颗粒细胞共培养，找到了一种适合猪卵母细胞体外成熟的培养基：mNCSU-23+15IU/mlPMSG+20IU/mlHCG+15%PFF+0.57mM半胱氨酸，成熟率和分裂率分别为(86.7±3.35)%和(86.3±4.16)%，国外报道的最高成熟率为(85.7±4.1)%；第二部分对猪卵母细胞孤雌激活的化学方法进行了研究，确立了化学激活猪卵母细胞的两种最佳方法：1将成熟的去卵丘颗粒细胞的MII期卵母细胞用20μmol/Lionomycin作用30min，再将卵母细胞培养于含5μg/mlCB和5mM/L 6-DMAP(6-二甲基氨基嘌呤)的NCSU-23培养液中，卵裂率和桑囊胚发育率达到(76.7±7.6)%和(37.1±6.4)%2将成熟的去卵丘颗粒细胞的MII期卵母细胞在200μM/L的Thimerosal中处理20min，再与8mM的DTT共孵育30min，卵裂率和桑/囊胚形成率为(81.0±2.8)%和(39.6±2.7)%；第三部分对孤雌激活胚胎的培养条件进行了研究，确立了一种最佳的胚胎培养条件：在SOF简单培养基中添加颗粒细胞进行前3天的培养，然后转入添加胎牛血清的NCSU—23培养基并和输卵管上皮细胞进行后期的培养，其桑椹胚和囊胚的发育率为(59.5±3.2)%；第四部分研究了IGF-I

In meiosis of pollen mother cells of the tetraploids and the hexaploids, only bivalents were observed in most of the populations, although in several populations or individuals a few univalents or tetravalents appeared. In the hexaploids, hexavalents were not observed.

四倍体和六倍体的花粉母细胞减数分裂染色体构型在大多数居群都为二价体(四倍体中30个二价体，六倍体中45个二价体)，少数居群或是个体除二价体为主外还出现单价体和四价体，六倍体类型没有出现六价体构型。

The main body of those personnel habitated in Guest House were mainly known as contributor embassy recorded in Chinese literature, others including headers of each border areas or foreign nations, merchants in the name of contributor embassy and some mortgagors.

中央客馆是指历史上周边四夷朝贡使节进入内地所建王朝（包括统一的中央王朝和分裂割据时的诸王朝）的京城后，各朝政府为安置和接待他们所设立的居住场所，或说所建立的中央一级的馆待制度。

与分裂为四的相关的网络解释 [注：此内容来源于网络，仅供参考]

ascaris：蛔虫

更著名的例子,有波佛利(Boveri)对于蛔虫(Ascaris)的研究,他说蛔虫的一个受精的卵发育起来时,早在分裂为四个细胞的时候,便以一个细胞为将来产生生殖细胞之用.

autism：自闭

这四个A代表四个层面障碍:联想(Association)障碍、自闭(Autism)、情感(Affect)冷漠及情感矛盾(Ambivalence). 换句话说,精神分裂病病人常常较自我封闭,思考方式为自闭性(与外界脱节),且在连贯上较松散. 他们在情绪的表达上倾向冷漠,

doubling：加倍

以加倍(doubling)增加方式而造成几何级数的成长现象,常见之於生物界的生殖. 例如一个细菌细胞以倍增方式滋长,一分为二、二分为四、四分为八,如果营养能充分供应且生长环境中无排泄毒物累积,以每15分钟分裂一次计算,则每小时可分裂繁殖4次,

neurotic：神经质

第三层为"神经质"(Neurotic)适应性,是"正常"("normal")人中最常见的. 其内容包括理智化(intellectualization)、分裂和抑制. 第四层为"最健康",它包括利他、幽默、预期、压制和升华. 在终生献身数十年的长期研究中.

nondisjunction：不分离

染色体数目异常是由于染色体行态异常或复制异常,其原因有四方面:(1)不分离: (nondisjunction)指在细胞分裂的中期和后期,某一对同源染色体或姐妹染色单体同时进入一个子细胞核为不分离; (2)染色体遗失(chromosome loss): 在细胞分裂的中后期,

second polar body：第二极体

此情况下,细胞分裂过程完成,并形成成熟卵细胞(mature oocyte)和第二极体(second polar body). 第一极体同时分裂为两个细胞. 因此卵子发生的最后结果是形成了一个成熟卵细胞和三个退化的极体. 这与精子形成不同,一个单独的初级精原细胞可发育为四个成熟的精子.

ty：太阳

我们的太阳(TY)就在银河系(YHX)内,银河系为什么没有分裂,我们伟大的天文学家们都没有搞清楚,却谭(T)特谭宇宙的诞生和死亡,是不是有些可笑?对于天文学而言,唯一可用的模型是相对论的以观察者为核心建立的四维时空模型,

Closterium：新月藻

*单胞藻(Chlamydomonas)游孢子成熟后,互相结合成二元的接合子,再经减数分裂,形成四个单元的游孢子. *星藻(Cosmarium)及新月藻(Closterium)的接合子,只分裂为两个新细胞.

isolecithal egg：均黄卵

受精卵不久即开始分裂,由于卵黄少,为均黄卵(isolecithal egg),因此卵的分裂为全分裂(holoblastic),且为等分裂. 第一次和第二次分裂皆为垂直分裂,分成四个细胞,第三次分裂为横分裂,分成上下八个细胞,如此继续分裂下去,许多细胞结成一个实心的圆球,

tetragenous：四联的;分裂为四的

tetradecenoicacid十四碳烯酸(存在于鱼油中的一种不饱和脂肪酸) | tetragenous四联的;分裂为四的 | tetrahedron四面体包装