1.
The hypovirulent strains of Cryphonectria parasgtica have been researched since they were found in1960.
自20世纪60年代发现栗疫病(枯病)毒菌系以来，关于弱毒菌系的研究不断深入。
2.
To make(bacteria or viruses) less virulent.
使病毒减弱减弱（细菌或真菌）的毒性
3.
This paper deals with the transfer method and mechanism of hypovirulence factors; the mixed system of virulent and hypovirulent strains; the super microcosmic structure and physiological characters in the two kinds of hyphae.
本文阐述了弱毒因子的传递方式、理，强、毒菌系混合体系，两类菌丝的超微结构以及生理特性。
4.
Effect of TREM-1 in sepsis caused by bacteroides fragilis in mice
髓系触发受体-1在脆弱类杆菌诱导小鼠脓毒血症中的作用
5.
The result of toxic test showed that the toxicity of colistin E on fish was low.
鱼毒试验显示黏菌素e对鱼的毒性为弱毒性。
6.
The Development of an Attenuated Vaccine Against Enterohemorrhagic Escherichia Coli O157:H7;
大肠杆菌O157重组弱毒疫苗的研究
7.
Rapid Detection Virulence Character and Clonal Relationships of Vibrio cholerae
霍乱弧菌毒力强弱及菌株同源性的快速检测
8.
Preliminary Study on Interspecies Transmission of Sclerotinia Sclerotiorum Debilitation-Associated RNA Virus (SsDRV) from S. Sclerotiorum to S. Nivalis;
核盘菌弱毒相关RNA病毒（SsDRV）感染雪腐核盘菌的初步研究
9.
Study on the Characteristics of RA Naturally Avirulent Strains;
鸭疫里默氏杆菌自然弱毒株的部分特性研究
10.
Indentification of An Attenuated Enterohemorrhagic Escherichia Coli O157:H7 Strain
一株弱毒的肠出血性大肠杆菌（EHEC）O157:H7的鉴定
11.
Antigenicity Attenuation and Targeting Immunotoxin Constrution of PEA Fragment
弱化抗原性靶向性铜绿假单胞菌外毒素A的构建
12.
Preliminary Studies on the 6.4kb dsRNA Genome of the Mycovirus Infecting the Hypovirulent Isolate Ep-1PN of Sclerotinia Sclerotiorum;
核盘菌弱毒相关病毒基因组分子生物学特性的初步研究
13.
Study on the Pathogenicity of Actinobacillus Pleuropneumoniae ApxIV and Gene Deleted Attenuated Vaccine
胸膜肺炎放线杆菌毒素ApxIV的致病性及基因缺失弱毒疫苗的研究
14.
Screening and identification of the differential genomic DNA between Brucella abortus virulent strain and attenuated strain
布鲁氏菌强毒株与弱毒株基因组DNA差异基因筛选与鉴定
15.
Effects of one different vic genes on transmission of hypovirus in Cryphonectria parasitica
栗疫病菌单个营养体不亲和性基因差异对弱毒性病毒传递的影响
16.
Preliminary Study on the Hypovirulent Phenotype of Sclerotinia Sclerotiorum Strain Ep-1PN Influenced by Coniothyrium Minitans Strain ZS-1
盾壳霉ZS-1菌株对核盘菌弱毒株Ep-1PN影响的初步研究
17.
Studies on the systemic acquired resistance (SAR) induced by weakvirulent race against Puccinia striiformis f.sp.tritici in wheat Ⅰ.initial observe for SAR
弱毒菌株尤Ⅱ对小麦条锈病的诱导抗性 Ⅰ.诱导抗性的初步观察
18.
Studies on the Systemic Acquired Resistance(SAR) induced by Weak-virulent Race against Puccinia striifomds f. sp. tritici in Wheat
小麦条锈病菌弱毒小种尤Ⅱ对小麦的诱导抗性研究