Stable episomal expression system under control of a stress inducible promoter enhances the immunogenicity of Bacillus subtilis as a vector for antigen delivery.
Paccez JD, Luiz WB, Sbrogio-Almeida ME, Ferreira RC, Schumann W, Ferreira LC. Stable episomal expression system under control of a stress inducible promoter enhances the immunogenicity of Bacillus subtilis as a vector for antigen delivery. Vaccine. 2006 Apr 05; 24(15):2935-43.