Figure 7From: The Salmonella Pathogenicity Island (SPI) 1 contributes more than SPI2 to the colonization of the chicken by Salmonella enterica serovar TyphimuriumSPI2 is essential to the colonization of mouse spleen by Typhimurium. Competitive indexes are from mixed infections in mice with the wild type and the Δspi2 (deletion of SPI2 structural genes), or the Δspi1 (deletion of SPI1) and the Δspi2 strains. Data from day 3 and day 5 post-infection correspond to intra-peritoneal and oral infections respectively. Each point represents an organ from an individual mouse.Back to article page