突变的

This muant strain also lost the ability of sporulation and production of crystal. At the same time, the production of ICPs is severely decreased by SDS-PAGE analysis.

该突变株也丧失了产生芽胞和晶体的能力，SDS-PAGE分析表明突变株G03的杀虫蛋白产量也非常低。

In order to obtain highly efficient H_2-producing aciduric anaerobic strain, a hydrogen producing strain H-8 was irradiated by microwave, the microwave mutagenesis parameters were optimized, and the genetic stability, hydrogen-producing potential and acid resistance of the mutant were investigated.

为获得厌氧产氢菌的高效突变株，以产氢菌H-8为原始菌株进行微波诱变处理，对微波诱变参数进行了优化，考察了突变株的遗传稳定性、产氢特性及耐酸性。

In conclusion, we successfully constructed the attenuate strain apxIC-/p36+ of Actinobacillus pleuropneumoniae serovar 10, and this mutation system will facilitate development of live attenuated vaccines.

成功构建了含猪肺炎支原体p36基因的胸膜肺炎放线杆菌血清10型突变株，所获得的突变株有望成为猪传染性胸膜肺炎弱毒疫苗株。

A novel mutation in the donor splice site of intron 1 of FECH gene is first reported in a Chinese family with EPP; this mutation may lead to a deficiency of FECH gene and serve as a molecular basis of development of erythropoietic protoporphyria.

报道一FECH基因第1内含子供体剪接位点的新突变，该突变可能引发FECH基因缺陷，是EPP家系中患者发病的分子基础。

Firstly, data processing method based on gray theory is used to change acoustic emission information into prediction data. Then prediction data is transformed into essential format of cusp catastrophic model by the least squares principle curve fitting and differential coefficient homeomorphous change. Finally, the gray and catastrophic prediction model is put forward to forecast failure time of rock slope.

首先运用灰色理论对声发射监测数据进行处理，得到预测数据，运用最小二乘曲线拟合展开，再运用微分同胚变换，转换为尖点突变模型的基本形式，建立灰色突变预测预报模型，从而对崩塌的时间进行预报。

High copies and the homoplasmic mutation in tumor, mtDNA mutations may be attractive diagnostic markers for some cancers.

由于肿瘤中mtDNA的高拷贝、同质性突变等特点，有人提出mtDNA突变有希望成为肿瘤早期诊断的分子标记。

Results Fourteen individuals from two pedigrees carried homoplasmic 1555G mutation. Seven sporadic patients and the five mothers did not have 1555G mutation.

结果 两个家系的14份样品为1555G点突变阳性，散发病例及部分亲属的12份样品全部为1555G点突变阴性。

Some morphological parameters in plants were measured.Results showed that the null mutants had longer plants,wider leaves and longer legumen stems,compared with the wild type.

结果表明2个缺失突变体的植株高度、叶片宽度、长角果果柄长度都明显超过野生型，而超表达突变体的部分指标与野生型相比也有明显差别。

Ancient mutations in mitochondrial DNA are the same as those found in the cells of many tumors.

发生在古代人的线粒体 DNA 突变和许多肿瘤细胞的突变一样。

Besides, the Tyr710Arg mutant produced two monocyclic products, achilleol A and camelliol C, and only the Tyr710Pro mutant lost the cyclase activity.

此外，在Tyr710Arg的突变株中也产生了两个单环的产物， achilleol A和camelliol C。而所有突变点中只有Tyr710Pro使氧化鲨烯环化酵素失去活性，且没有任何产物产生。

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。