Our study indicated that the plasmid DNA of Shigella DNA abstracted from Shigella was determined with agarose gel electrophoresis, and conducted into E. Coli K_(12) W_(1485), which expressed antagonism on streptomycin.

• 从痢疾杆菌D_(15)提取质粒DNA,用琼脂糖凝胶电泳检测,并把它导入大肠杆菌E、Coil K_(12) W_(1485)。