Expression of the murine interleukin-4 gene in an attenuated aroA strain of Salmonella typhimurium: persistence and immune response in BALB/c mice and susceptibility to macrophage killing

Expression of the murine interleukin-4 gene in an attenuated aroA strain of Salmonella typhimurium: persistence and immune response in BALB/c mice and susceptibility to macrophage killing