While Nramp-Tg macrophages express approximately 4-fold more Nramp1 transcript than Nramp-Cg cells (Figure 1), we observed no Nramp1 dose-dependent difference in colonization between Nramp-Cg and Nramp-Tg mice during acute IP-induced Salmonella infection (Figure 2). The gene discussed is SLC11A1; the disease is Salmonella Infections.