Immunodeficient (SCID) and immunocompetent mice were infected with Hel
icobacter felis to address the role of autoimmunity in Helicobacter-as
sociated gastritis. The extents of inflammation were equivalent in the
two groups. The numbers of H. felis organisms were marginally increas
ed in the SCID mice but did not achieve statistical significance. Thes
e results indicate that autoimmunity is not necessary to induce diseas
e and that the presence of an adaptive immune system does not signific
antly affect H. felis colonization.