组织细胞的

Quantitative chromatics analysis of large bowel tumorous adenoma and adenocarci-noma was made by the methods of computer image processing.

本文通过对大肠腺瘤和腺癌组织进行计算机图像定量分析，表明大肠腺瘤和腺癌的腺上皮细胞以正常杯状细胞和柱状细胞的色度学特征分布为基准可划分为两大类：杯状细胞性腺上皮和柱状细胞性腺上皮。

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。

Beijingensis under three droughttreatments, normal, moderate and severe stresses. The results showed:(1) the canker disease ofboth cultivars was serious gradually with increased drought;(2) the bark tissue cells sufferedplasmolysis, more evident with the severity of drought stress;(3) under the drought andinoculation with B. dothidea, cells of two cultivars damaged at different degree, mailyrepresented in the changes of organelles, such as chloroplast swollen and distorted, number ofmitochondria increased and membrane system indistinct; then organelles suffered furtherdamagement with inoculation time, thinned mitochondrias stroma, decreased cristae, crumpledand partly broken membrane of chloroplasts with stroma exosmosis. At last, the chloroplastspartly disorganized;(4) the hyphae growed mainly intercellular in resistant cultivar and notonly intercellular but also intracellular in susceptible cultivar, which directly caused thenecrosis of cells;(5) under the severe drought, the damage of cells enhanced the infection ofpathogen and drought and pathogen stressed together and promoted the disease development;the damage from pathogen on cells was more serious than that from drought.

结果显示：(1)随着干旱胁迫程度的增加，2种杨树溃疡病害发生渐趋严重；(2)干旱胁迫下，杨树树皮组织细胞发生质壁分离，并随胁迫程度的增加而严重；(3)干旱胁迫下接种病原菌，2种杨树细胞发生不同程度的损伤，主要表现为细胞器发生较大变化，如出现叶绿体肿胀变形、线粒体数量增多，质膜模糊不清等现象；随接种时间的延长，细胞器受到进一步损伤，叶绿体被膜折皱，严重时局部破裂，基质外渗，并部分最终解体；(4)毛白杨中的菌丝主要在细胞间隙中穿行，而北京杨的菌丝除在细胞间隙中生长之外，侵入细胞内部也较多，直接导致细胞的解体；(5)干旱胁迫下细胞的损伤促进了病原菌的侵染，干旱和病原菌的双重胁迫加剧了病害的发生程度，并且病原菌侵染对细胞的破坏程度大于水分胁迫。

Results showed that L-THP possessed negative inotropic and negative chronotropic action, lowed left ventricular pressure and it's infinitesimal calculus, decreased heart output in per min., shorten 〓 and 〓 of action potential of ventricular papillary muscle of guinea pig and even the plate-phase of action potential disappeared in larger dose group , but prolonged 〓. we studied transmembrane transportation of 〓 after administering L-THP , L-THP not only depressed uptake and increased release of Ca 2+ in normal myocardium, but also it showed stronger inhibition in cell injured by ISO, and fully eliminated the effect of ISO increasing uptake and decreasing release of 〓. By detecting the 〓 content of ventricular single myocyte using fluorescent probe Fluo-3/AM, results correspond to that done above, L-THP decreased 〓 content inside of cell significantly. Using whole-cell mode, we observed the effect of L-THP on Ica in ventricular single cell, it was found that L-THP decreased Ica, the effect increased with increasing it's dose, and had voltage, frequency-dependency. Dose highly corelated to effect, corelative constant is 0.87. When washing cell with normal tyre's solution, Ica could recover, which proved the blocked action of L-THP on calcium channel once again. Meanwhile, L-THP reduced production of MDA in heart injured by ISO in dose-dependent manner, improved content of GSH-Px, in case tissue or cell free from free radical damage.

结果显示，该药物具有负性肌力和负性频率作用，降低左室压及其微分，终使每分心输出量减少；缩短豚鼠心室乳头肌动作电位时程的〓和APD〓，大剂量使动作电位平台消失，〓延长；同位素示踪法研究证实L-THP抑制〓摄取，促进〓释放，降低细胞内的〓含量；单通道水平的研究证实，L-THP减少豚鼠心室肌单细胞内向钙电流，且具有剂量，电压，频率依赖性，其作用易于洗脱，药物剂量与Ica也具有高度相关性（相关系数r为-0.87）；L-THP还可抑制ISO损伤心肌组织所致的丙二醛含量增加，增加谷胱甘肽过氧化物酶的量，使组织细胞免受损伤。L-THP阻断L-型〓通道，抑制〓的摄取，促进〓的释放，降低细胞内〓含量L-THP作用的离子基础。

Nonadherent cells were removed on day 1 at the time of the first medium change, and fresh medium was changed every 3 days thereafter.

能够作为组织工程中不同细胞的来源；在体内正常循环中能够分布于多种组织和器官，可以用于细胞和基因治疗。

It has been showed that human periodontal ligament cell is a kind of polyclonal cells and play a great part in the course of periodontium reconstruction.

人牙周膜细胞(human periodontal ligament cell，hPDLC)作为牙周组织中的主要功能细胞，具有多向分化潜能，在创伤修复和组织再生中发挥着重要作用。

① All this suggested that during the hepatocarcinogenesis and the developing stage of liver cancer in a rat its organism never cease to monitor the activities of and eliminate the abnormal cells;② During the precirrhosis and cirrhosis stage,the velocity and extent of tissue proliferation was limited by cell apoptosis.

①大鼠肝癌发生过程中，机体进行细胞增殖以补偿因DEN损害导致肝细胞减少的同时，还通过细胞周期调控机制，以细胞凋亡为表现形式，始终在监测和清除着异常细胞；②肝硬变前期和肝硬变期，机体通过细胞凋亡，使组织增生的速度和规模受到控制。

Objective: To provide seeding cells for vascular tissue engineering research.

第一部分组织工程血管种子细胞的培养目的：为构建组织工程血管提供种子细胞。

Part one Culture of seeding cells for vascular tissue engineering Objective: To provide seeding cells for vascular tissue engineering research.

第一部分组织工程血管种子细胞的培养目的：为构建组织工程血管提供种子细胞。

The thoracic duct endothelia in vitro could remain their biological properties, and could be made a tool for studing their functions and cancer metastasis mechanism by lymphatics. The positive expression of VEGF-C in cancer cells was correlated with cancer development, it seem to be that VEGF-C induce lymphoangiogenesis through its receptor Flt-4. The Flt-4 expression of lymphatics in cancer tissues was assosiated with cancer development, it is considered that there are new lymphatics in cancer tissues.

体外培养的大鼠胸导管内皮细胞可以保持体内淋巴管内皮细胞的生物学特性，可作为研究大鼠淋巴管内皮细胞功能和进一步研究癌转移机制的体外实验材料；大鼠大肠癌组织腺体的VEGF-C表达与肿瘤进展有关，推测其通过受体Flt-4诱导淋巴管生成；Flt-4在淋巴管的阳性表达随肿瘤进展增多，推测在癌组织内存在淋巴管的新生。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐