细胞学

Upon these plants, some germplasm resources were collected at home and abroard, and their morphology, palynology, cytology, growth and development habit, fruit economy characteristics were studied. The extraction methods for DNA of Lonicera Caerulea L. and reaction system of RAPD were also discussed in the project. And it was the first time to study the genetic diversity, relationship and classification of Lonicera Caerulea L on wild resource in Northeast of China and subsection using RAPD.

针对这些问题，我们收集了国内外的种质资源，从形态学、孢粉学、细胞学、生长发育习性和果实经济生物学性状等方面对东北地区野生蓝靛果忍冬的生物学特性进行了系统研究；对蓝靛果忍冬DNA的提取方法和RAPD的反应体系进行了详细探讨，并首次运用RAPD技术分别对东北地区野生资源和蓝果亚组种间的遗传多样性和亲缘关系、分类等问题进行了研究和分析。

The genetic diversity were comprehensive analyzed in this project through comparative study with the growth rhythm, morphology, palynology,cytology and chemical ingredients of 16 populations of pinellia ternata, which were collected from all around the country, applied computer techniques to analysis the DNA amplification electrophoresis chromatogram of 10 populations of pinellia ternata as well. The genetic relationship of the nature populations in different ecological region are confirmed. Populations of Pinellia ternata were classified on internal species.

本项目通过对从全国各地收集的16个半夏居群间的生长节律、形态学、孢粉学、细胞学、化学及其中10个半夏居群的DNA片断扩增后的电泳图谱比较研究及计算机数据分析技术，对半夏的遗传多样性进行综合分析，初步确定了我国不同生态区半夏各自然居群的遗传关系，划分了种以下单位。

The research advances in genetic relationships of peach germplasm, including the morphologic, cytology, palynology, biochemistry and DNA molecular markers, were reviewed in this paper. The actuality, prospect and urgent problems of peach germplasm resources were also discussed. To further study the genetic relationships of wildness, sib wildness and cultivar groups of peach, we may resort on genetic markers and DNA sequence analysis in addition to morphological characters.

本文从形态学、细胞学、孢粉学、生物化学及DNA分子标记等几个方面综述了桃种质资源亲缘关系的研究进展，探讨了桃种质资源亲缘关系的研究现状、前景及尚需解决的问题，并就进一步开展桃种质资源亲缘关系的研究进行了分析，提出桃种质野生种、近缘野生种厦不同栽培品种群间的分子系统学关系是今后研究的重点。

Objective To evaluate the value of pancreatic juice in cytologic examination and PCR-SSP in detecting K-ras gene mutation for diagnosis of pancreatic carcinoma.

目的 评价胰液细胞学检测与聚合酶链反应―顺序特异性引物检测K-ras基因点突变诊断胰腺癌的价值。

The research of cytology shows that there are dramatically morphological and structure changes in the leaf: the cells of mesophyll array loosely and parenchyma cells reduced, cambium becomes thinner and degree of xylem becomes more serious, the content of chlorophyll dropped; the changes of conducting tissue and stoma structure affect transport and allocation of water and nutrient, hinder leaf growth and disturb regular metabolism of leaf, at last lead to wilt, rot and become crisp papyraceous.

细胞学研究表明，病叶组织的叶肉细胞排列疏松，薄壁细胞层次减少，形成层变薄，木质化程度加深，叶绿体减少；在病叶中由于疏导组织和气孔的结构发生变化，影响养分和水分在植株体内的运输和分配，干扰叶片的正常代谢，抑制叶片的生长发育，最终导致叶片失水萎缩、干枯，变为焦脆的干纸状。

Apoptosis is an important cellular event that plays a key role in pathogeny and therapy of many diseases.

摘 要：细胞凋亡是机体生命活动中重要的细胞学事件，在许多疾病的治疗中也起着关键性的作用。

Methods:[WT5BZ]Thirty-seven cases with primary tumour in department of X-ray ,Haining second hospital January 1998 to June 2000,all patients with pathology (18 cases),cytology(3 cases)and computed tomography,magnetic resonance imaging,specific photology etc.(16 cases)proved lung metastatic tumor and to studied the X-ray basic change,primary tumuorign and patholog types etc.

收集海宁市第二人民医院放射科 98年 1月至 2 0 0 0年 6月拍摄胸片的 37例其原发癌瘤，经病理( 18)、细胞学( 3)或 CT、MRI、特殊造影检查( 16)等确诊的肺转移瘤资料，对其肺部转移性病灶的基本 X线表现、原发癌肿来源、病理类型等进行分析研究。

Cytological observation showed that after spraying Paclobutrazol and Unlconazole, the length of the epidermal cells of the stem became significantly shorter but not its width, its pilus epidermidis significantly shorter, the number of cells for each pilus epidermidis significantly less and the diameter of its sieve tube became significantly smaller.

细胞学观察表明，喷施多效唑和烯效唑，其茎秆表皮细胞长径显著变短，短径无显著变化；茎秆表皮毛显著变短，每个表皮毛的细胞数显著减少；茎秆筛管直径显著变小。

With the marked degree of cytologic pleomorphism in figures 4~5, they probably represents a case of giant cell variant of primary undifferentiated carcinoma - a very malignant primary thyroid cancer.

图4~5有显著的细胞学多形性，可能代表一例巨细胞原发性未分化癌-一种非常恶性的原发性甲状腺癌。

The factors affecting the seed-set rate ofintersubspecific hybrids include embryo sac sterility,pollen sterility,anther dehiscence and non-synchronization of male and female sexual organsdevelopment in the same spikelet.

对水稻亚种间杂种及其稳定的多胚品系SB-1进行了细胞学、胚胎学和遗传学研究，主要结果如下：1、影响杂种低结实率的因素包括胚囊败育、花粉败育、花药不开裂和雌雄性器官发育进程不一致。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。