Finally, The recombinant plasmid pVAX1-S1 was transformed by electroporation into attenuated Salmonella typhimurium strain SL7207 and confirmed by PCR and Salmonella agglutination test. The recombinant was named as SL7207(pVAX1-S1).

• 将重组质粒转入减毒鼠伤寒沙门氏菌SL7207中,构建出运送DNA疫苗的重组沙门氏菌SL7207(pVAX1-S1)。