Simmons Simmons CP CP ,  Goncalves Goncalves NS NS ,  Ghaem-Maghami Ghaem-Maghami M M ,  Impaired resistance and enhanced pathology during infection with a noninvasive, attaching-effacing enteric bacterial pathogen, Citrobacter rodentium, in mice lacking IL-12 or IFN-gamma Impaired resistance and enhanced pathology during infection with a noninvasive, attaching-effacing enteric bacterial pathogen, Citrobacter rodentium, in mice lacking IL-12 or IFN-gamma . The gene discussed is IFNG; the disease is infection.