The active promoter fragment was cloned from actinophage? φ SL 60 and then sequenced by dideoxynucleotide sequencing system.通过测定林可链霉菌噬菌体? SL60启动子活性片段的碱基,分析了该启动子的结构、核糖体结合位点、转录起始位点和翻译起始密码子等功能元件....
Conclusion The organism was identified as Leptospira L - form by the multiple methods.结论多种方法均鉴定该菌株为钩端螺旋体L型.Aim To investigate the pathogenesis , treatment of leptospira L - forms myelitis.目的探讨钩体L型脊髓炎发病机理和防治.Cranial CT Fe...
Plains, plateaus, and mountain ranges are major landforms.平原 、 高原和山脉都是主要的地形.Landforms of topography, vegetation and climate are influential factors in formation of soils.地形或地形学 、 植被和气候都是对土壤形成有影响的因素.Water and soil loss is...