极细胞

内褶的植物极细胞生成一片向上生长的细胞，并最后围成一个腔，即原肠。

The inpocketed vegetal pole cells develop into a sheet of cells which grows upward and eventually encloses a cavity , the archenteron .

结果表明，熔化区有极细胞状组织、极细枝状晶的形成；

The results indicate that in the melted zone there are very fine cell structure and dendrite .

在该案件这种疾病，这是一种炎症前极细胞脊髓。

In the case of this disease , it is an inflammation of the anterior pole cells of the spinal cord .

原始生殖细胞来自极细胞，分两团移至胚胎腹部侧背面，被中胚层细胞包裹，形成生殖脊。

Primordial germ cells came from pole cells and moved in two masses to the laterodorsal abdomen of embryo , and then were enveloped by mesoderm to form germinal ridge .

72h时：只残留极少数细胞，呈散在分布。结论CA1迟发性神经元坏死从再灌流第一天即已开始，第2、3天为剧。

Conclusion Delayed neuronal death takes place from the first reperfusion day , and becomes drastic on 2 and 3 day .

未诱导细胞近100%呈巢蛋白阳性，仅有极少数细胞Tubulin阳性或胶质纤维酸性蛋白阳性。

About 100 % of the cells that were not induced appeared positive nidogen , only extremely a few cells had Tubulin positive or positive expression of glial fibriliary acidic protein .

成人肾小球极垫细胞区的微血管构筑

Microvasculature of the polar cushion cell area of adultis glomerulus

极周细胞的结构和功能

THE STRUCTURE AND FUNCTIONS OF THE PERIPOLAR CELL Relationship between pericytes and diabetic retinopathy

我们道德、心智或身体构造的任何一个极微小细胞都不可能保持一年不变。

No smallest atom of our moral , mental , or physical structure can stand still a year .

成熟的胚囊是五核胚囊：由近珠孔端的卵细胞和两个助细胞以及两个中央极核细胞构成的。

The mature embryo sac was one with five nucleus , i.e. , egg apparatus and two-nucleus central cell .

本文对极垫细胞区微血管的功能意义进行了讨论。

The function of the microvessels of the area of the polar cushion cell was discussed in this article .

极垫细胞区的微血管与肾小球的微血管直接延续。

The afferent arteriole was often traveled in the central part of the area of the polar cushion cell .

结果表明，泰和鸡的肾小球旁器由球旁细胞、过渡型致密斑、球外间膜细胞和极周细胞所组成。

The results show : The JGA of Taihe fowl consisted of juxtaglomerular cells , transitional macula densa , extraglomerular mesangial cells and peripolar cells .

漏出：属于血浆的超滤液，含有少量蛋白，极少量细胞，液体澄清。

Transudate : extravascular fluid collection that is basically an ultrafiltrate of plasma with little protein and few or no cells . Fluid appears grossly clear .

结果表明，除极组细胞内Na~+活度（a~1Na）对照值及在预先提高细胞内Na~+水平的情况下所测得的Na~+逐出速半与正常组无显著差别。

It was suggested from the results that the control values of intracellular sodium activities and the Na + extrusion rates after increase in the level of intracellular sodium exhibited no significant difference between the two groups .

极垫细胞区的微血管主要来自入球小动脉，后者常穿经此区微血管的中央部，但也可呈偏心位。

The microvessels of the area of the polar cushion cell , which mainly originated from the afferent arteriole , were continuous with the capillary of the glomerulus . The afferent arteriole was often traveled in the central part of the area of the polar cushion cell .

H2O2是一种反应氧（ROS），极易穿过细胞膜及核膜，通过直接氧化或还原产生羟自由基损伤细胞DNA、蛋白质和脂质等而致细胞死亡。

H2O2 readily crosses cellular membranes and yields hydroxy free radical by oxidation or deoxidation , which could kill cells by damaging DNA , proteins , and lipids .

结果表明，B细胞多呈园形或椭园形。B细胞多位于胰岛中央，极少数B细胞位于胰腺外分泌部或导管上皮内。

B cells appeared as circular or ovoid structure B cells were mainly located in the center of pancreatic islets , a few of B cells were seen in the exocrine portion of the pancreas or in the epithelia of the pancreatic ducts .

药理实验表明它对实验用小白鼠有致死性（LD（50）～6.6mg/kg），并具有抗血小板聚集活性，间接溶血活性，肌毒性，心脏毒性，以及极弱的细胞毒性。

It put up lethal activity ( LD50-6.6 mg / kg ) to mouse . It also exhibited indirect haemolytic , inhibit platelet aggregation , myonecrotic , cardiotoxic and very weak cytotoxic activities .

结果免疫组织化学染色观察发现，对照组口腔黏膜组织未见或仅见极少量上皮细胞胞质内呈现OPN阳性染色；

Results In oral mucosal tissues of control group , there was no or very little OPN positive expression observed in epithelial cytoplasm by immunohistochemical staining .

FSK7902细胞系的实体瘤中，极少数癌细胞呈EK阳性。作者推测，它们可能是含有或正在形成Mallory小体的细胞。

In the solid tumors of FSK 7902 , few cells which are EK-positive may be those in which there are Mallory bodies or the structures are forming .

Caco-2细胞来源于人结肠腺癌细胞，在培养条件下形成极性单细胞层，具有微绒毛以及紧密连接等类似于人体小肠上皮细胞刷状缘侧的分化特征。

Caco-2 cell came from human adenocarcinoma of colon cells and form polarity monolayer spontaneously in condition of cultivation , which have the differentiation characteristic of microvillus and tight junction which was similar to human small intestine epithelium striated border .

重型及极重型OKT4细胞百分比极期降低，其OKT8细胞百分比接近正常水平。

At the crisis stage , the percentage of OKT4 decreased in the severe and very severe types while the percentage of OKT8 was close to normal level .

神经元是一种有极性的细胞，其形态发生在神经系统发育过程中有着极其重要的作用。

Neuronal morphogenesis plays an important role in neuronal development .

缺血缺氧损伤对肠上皮细胞整合素极性及细胞凋亡的影响

Influence of ischemia and anoxia on distribution and polarity of integrin in intestine epithelial cells

出生后60天仅存在极少量感光细胞，内节几乎完全消失。

It was not until 60 post-natal days that few photoreceptor and inner segment were present .

上皮细胞通过细胞极性和细胞间粘附和紧密连接而发挥功能，但同时也限制了迁移的能力。

Epithelial cells play function through the cell polarity , adhesion and tight junction , at the same time limiting the ability of migration .

中央凹极高视锥细胞密度为提供敏锐中心视力的基础，其极大的个体差异与发育有关。

The high density of retinal cone cells at the central fovea provide the basis of sensitive central visual acuity , which relates to the individual variation and development .

大量的实验和临床资料表明进入血流的肿瘤细胞绝大部分将会死亡，只有极少数肿瘤细胞能存活并形成转移灶。

Extensive experimental and clinical data indicate that the majority of tumor cells die rapidly in the circulation , and only a few of them can survive and proliferate to form distant metastases .

生殖上皮呈单层或复层住状，其增殖能力极强，细胞突破基膜进入卵巢深部，与卵巢间质细胞相混。

The cells in the area of the stratified epithelium have a very strong proliferating ability , their processes penetrated the basement membrane and extended into the ovaries and mixed with the stromal cells .