Researching progress of several key factors that maize gene transformation using Agrobacterium tumefaciens were reviewed, including explant, base-medium and supplementary, co-culture temperature, signal molecular and Vir gene activation?

The plant is then transformed using the engineered Agrobacterium containing both plasmids, one including the VIR region and the other the T-DNA.

于是就可以用含有两个质粒的工程农杆菌转化植物，即工程农杆菌的一个质粒含有VIR区，另外一个质粒含有T-DNA。

According to the studies on distribution of A. tumefaciens on plant cell walls, the expression of vir gene, and the transient expression of gus gene, the feasibility of this method for transforming to barrel medic was tested.

另外，通过对农杆菌在植物细胞壁上的吸附、vir基因的表达及gus基因的瞬时表达的研究，初步探讨了该法对截型苜蓿遗传转化的可行性。

VIR can serve as a marker of abnormal regional wall motion and ischemic myocardium.

等容舒张期的峰值速度是局部心肌室壁运动异常和心肌缺血的标志。

Our data indicated that the A. tumefaciens cells grew well inside the floral tissues and the expression levels of vir genes were also high, during the six floral stages.

研究表明，接种的六个时期农杆菌存活都很好，vir基因表达水平也很高；

The goal of exploiting vir tu al manufacture system makes virtual production environment, it can analyze capa bility of virtual production.

开发虚拟制造系统的目标是为虚拟制造建立一个虚拟的制造环境，用于仿真和评估各制造过程对产品质量的影响。

Regarding the regulation of Vir gene expression by metabolites, the levels varied with the kind of plants, and the regulatory responses of various Vir loci to extracts or exudates varied with not only different sources but even the fame one.

其调节水平随植物的不同而明显不同，但单、双子叶植物的代谢物对Vir基因表达的调节作用并非截然分开。

Synthesis of Tricin the Vir Gene Inducing Expression Factor

水稻转基因表达的诱导因子麦黄酮的合成

Agrobacterium tumefaciens-mediated transformation included steps such as chemotaxis, attachment, vir region induction, T-DNA processing, transport, insertion, genes expression and so on.

根癌农杆菌将T-DNA转移并插入寄主细胞的基因组，需要趋化与附着、vir区活化、T-DNA切割及转运、T-DNA整合及表达等步骤。

In-flight Radiometric Calibration for VIR Channels of FY-1C Satellite Sensor by Using Irradiance-based Method

采用辐照度基法对FY-1C气象卫星可见近红外通道进行绝对辐射定标

Structure-activity Research of Signal Factors Inducing Agrobacterium vir Genes

诱导根癌土壤杆菌vir区基因表达信号分子的构效研究

All the published moments of light minima of the near contact binary BF Vir have been compiled and the changes of orbital period have been analyzed.

收集了近相接双星BF Vir的光极小时刻，并对其轨道周期进行分析。

Studies on the Synthesis and Properties of Ferrocenyl Derivatives vir Diels-Alder Cycloadditions

二茂铁衍生物的Diels-Alder反应产物的结构与性质研究

In this communication, we review the recent studies on the molecular basis of Agrobacterium-plant gene transfer process. The review focuses on several topics including vir gene induction, T-DNA production, T-DNA transfer, T-complex transport apparatus and so on.

作者将介绍加vir基因的诱导、T－DNA的加工、T－DNA的转移，以及T－复合体运输的装备等方面的最新研究进展，以探讨农杆菌－植物间基因转移的分子基础。

Objective To study the roles of nuclear localization signal ( NLS) in nuclear import of JC vir-us-like partieles ( VIP).

目的探讨JC病毒（JCV）主要外壳蛋白VP1所含核定位信号（NLS）在JCV病毒样颗粒（VLP）入核转运中的作用。

Photoelectric Observations and Photometric Analysis of Ax Vir

室女座Ax的光电观测及光度解

Alter tablespace VIR read write;

使表空间可读写。

Objective: To evaluate the application of CT vir tu al bronchoscopy ( CTVB) in the diagnosis of lung central type carcinoma.

目的：评价CT仿真支气管镜（CTVB）在中心型肺癌诊断中的价值。

Binary vectors for genetic engineering consist of one plasmid containing the VIR region and a second containing the T-DNA including the foreign DNA.

用于基因工程的双载体系统由一个含有VIR区的质粒和一个含有T-DNA的质粒组成，其中T-DNA含有外源基因。

The metabolites from three monocotyledonous and three dicotyledonous plants were respectively utilized to regulate the expression of virulence ( Vir) genes in Agrobacterium tumefaciens.

本文研究了六种植物（三种单子叶植物、三种双子叶植物）愈伤组织的渗出物和抽提物对农杆菌Vir基因表达的调节作用。

Study on Method for Dilapidating Walls of Maize Pollen& II. Study on Method for Dilapidating Walls by Microwave in Low Temperature

玉米花粉破壁方法的试验研究&Ⅱ.超低温加微波破壁方法的研究