Co-localization of quantitative trait loci regulating resistance to Salmonella typhimurium infection and specific antibody production phenotypes.

Salmonella enterica serotype typhimurium is a facultative intracellular bacteria that induces systemic infection in mice. Resistance to this pathogen is under polygenic control in which Nramp1 is the major gene involved. Lines of mice obtained by selective breeding for high (HIII) or low (LIII) antibody response to flagellar antigens of salmonellae showed significant susceptibility differences, although both the lines display Nramp1(R) alleles.