Using the cross-protection of attenuated strain to protect plant from infecting by virulent strain of the same virus was proved one of ideal means.
利用病毒的弱毒株的交互保护作用是防治病毒病较为理想的手段之一。
参考来源 - 烟草花叶病毒弱毒疫苗的研制及其分子生物学·2,447,543篇论文数据，部分数据来源于NoteExpress
The dynamic changes of tissue structure in 4 days old ducklings which were infected with chicken embryo attenuated strain MY of duck hepatitis virus were observed.
对鸭肝炎鸡胚化弱毒株MY接种4日龄雏鸭后的组织变化进行了动态观察比较研究。
Conclusion The JEV attenuated strain SA14-14-2 is genetic stability after passaged continuously on PHKC to 20 generations, and proved a good safety on molecular level.
结论乙脑病毒减毒株sa14 - 14 - 2的遗传学特性稳定，从分子水平证明了乙脑减毒活疫苗的安全性。
The results showed that the numbers of IEL in tracheas was increased significantly (P<0.01) with PRRS attenuated strain immunization by nasal route contrast to muscle injection and control group;
气管IEL数目的变化：PRRS弱毒株鼻腔免疫组IEL数量比对照组和肌肉免疫组呈极显著增加（P<0.01），PRRS弱毒株肌肉注射免疫组IEL数量与对照组无显著变化。
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