两细胞的

Abrin is one of the potent toxins isolated from the beans of plant abrus precatorius.the toxic protein consists of two disulfide-bonded subunits,the a and b chains.the b chain is a galactose-specific lectin that facilitates the binding of abrin to the cell membrane that precedes endocytosis.after entering the cells,the a chain catalytically inactivates 60s ribosomal subunits by removing adenine position 4324 of 28s r–rna,and thereby inhibits protein biosynthesis.

相思子毒素是从豆科植物(abrus precatorius l。)种子中分离的一种细胞毒性蛋白。它由a，b两条链组成，由一个二硫键相联，b链具有半乳糖凝集活性，可与细胞膜上受体结合，帮助a链进入细胞内，a链进入细胞催化失活60s核糖体亚基，从而使细胞蛋白合成被抑制。

Through all this test analyse Pathogenicity and Immunological status of ALV-J Inner Mongolia strain, the result showed the infected chickens began to have pathological change of Myelcytomatosis at 3-week: the main pathological changes of acidophile myelocyte were found in bone marrow and between cardiac muscle fibers,and there were many granules in the hyalotome.This kind of oncocyte proliferated in every tissue at different amount, but the cells that proliferated in bone marrow, cardiac muscle fiber, oarium were much more than other tissue, and they often developed neoplasma. At same condition,there were no abnormalty advent in control group, In immunological aspect: the increase of lymphokine and ANAE positive cells showed cell-mediated immunity was strengthend during antineoplastic infection; the emergence of ALV-J antibody of ELISA suggest there was humoral immunity exist at the same time.

结果显示：脾脏PCR检测结果表明1、2两实验组均有阳性病例出现，而对照组全部为阴性，说明实验鸡体内已有ALV-J内蒙株感染；接种病毒后3周龄开始出现骨髓细胞瘤病的病理变化：肝脏、脾脏有程度不同的肿大，镜下观察，骨髓内最早出现了与骨髓细胞相似、形态基本一致的大型圆形或椭圆形、胞核较大多为椭圆形、胞浆内含有大量嗜酸性圆形颗粒的髓细胞样瘤细胞增生，随后通过血流瘤细胞可转移到肝脏、心肌、卵巢或睾丸等组织并形成肿瘤性病灶，而对照组没有出现明显病变；免疫状态方面：以脾脏淋巴因子和ANAE阳性细胞增多说明细胞免疫在抗肿瘤感染过程中增强，ELISA检验实验鸡抗体出现阳性的结果表明同时也存在着体液免疫。

Necrosis and apoptosis that gradually increase and eventually result in enervation and death of chicken with selenium-penia. The effect of selenium on the lipid peroxidation of the cellular membrane system of tissues is the main mechanism that selenium induces apoptosis of tissues.

雏鸡硒缺乏时，甲状腺、肝脏、胸部肌肉、胰腺、胸腺等组织细胞凋亡增加，证明硒缺乏雏鸡体内发生两种细胞死亡，即坏死和细胞凋亡，由于细胞坏死和凋亡的加重与增多，致使硒缺乏雏鸡走向衰竭，最后死亡。

B cells and T cells , originate from stem cells in Bone marrow and travel to lymphoid tissues.

淋巴球有两个主要类型︰B细胞和T细胞，两类都源于骨髓中的干细胞，然后再流至淋巴组织。

These EM images clearly discovered that:(1) all the tested tumor cells came into being CPE;(2) the CPE can be divided into two kinds: The first one is those viruses propagate in a large amount and lyse tumor cells. The other is that viruses propagate to some degree and induce tumor cells apoptosis.

电镜图像明显地揭示出：(1)上述受试肿瘤细胞均产生了CPE；(2)受试肿瘤细胞出现的CPE分为两类，一种是病毒大量增殖，细胞裂解死亡；另一种是病毒有一定量增殖，并诱导肿瘤细胞凋亡。

Some single embryogenic cells produced an embryonic cell and a suspensor cell by the first division and embryonal suspensor masses were produced after several divisions.

胚性愈伤组织中的一些单个胚性细胞经过第一次分裂产生两个细胞，即胚细胞和胚柄细胞，它们继续进行分裂几次以后形成胚性胚柄团结构。

The results showed that the expression of calm3 and trm112l genes had no remarkable differences in oocytes and 8-cells stage embryos, but were significantly different in blastocysts. It was supposed that these two genes were possibly maternal genes, and they might be involved in oocyte maturation and zygotic genome activation.

结果显示，在卵母细胞和8细胞期胚胎，基因calm3和trm112l的表达量无显著性差异，而在囊胚期的表达量与前两个时期的表达量存在显著性差异，推测这两个基因在牛胚胎发育过程中的表达可能属于母型调控，提示该基因在卵母细胞成熟和合子基因激活中起一定作用。

A quantitative assay of OM and M in biological specimen was established on their characteristics Everted gut sac and Caco-2 cell model were used to study the intestinal absorption kinetics of OM and M.

通过大鼠外翻肠囊和Caco-2细胞这两种肠吸收模型对OM和M的肠吸收特征及吸收动力学进行了研究，两种方法都显示OM的肠吸收主要为经细胞旁路被动扩散吸收，而M的肠吸收主要为经细胞通路被动扩散吸收。

All experiment animals lived well with no death or malignant arrhythmia following cell transplantation. Frozen sections of the heart showed a few blue-stained cells under the fluoroscope in the cell transplantation group 4 weeks later. This indicated that stem cells were successfully homing. Using hematoxylin-eosin staining, homing cells were distributed over the infarct zone, with the presence of single or mass. In the model control group, no blue-stained cells were determined.

细胞移植后两组大鼠均存活良好，未出现死亡及恶性心律失常，4周后细胞移植组心脏冰冻切片荧光镜检显示心肌内有少量胞核蓝染的细胞，提示干细胞成功归巢，结合苏木精-伊红染色，归巢细胞位于心肌梗死灶周边区域，呈单个或小团聚集；而模型对照组心肌切片未见胞核蓝染的细胞。

According to the drug density determined by toxicity experiment, astrocyte cell of serial subcultivation was randomly divided into experimental group and control group in cell multiplication experiment.

用流式细胞术测定细胞增殖情况，是将星形胶质细胞接种到细胞培养皿中，按实验要求随机分为对照组和药物组，两药物组中分别加入浓度不同的腰痛定药物血清。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。