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Infect Immun. 1986 November; 54(2): 339-346

Immune response of athymic and euthymic germfree mice to Campylobacter spp.

ABSTRACT

Pure cultures of several Campylobacter spp. induced a specific humoral immune response after they colonized and infected gnotobiotic mice; however, Campylobacter-immune mouse serum was not bactericidal (in vitro), manifested a weak agglutination reaction (in vitro), and showed specificity (strain 45100-immune mouse sera) for the homologous (infecting) Campylobacter strain, but was not able to passively protect germfree athymic (nu/nu) BALB/c mice against Campylobacter infection and diarrhea. Active immunization of germfree nu/nu mice with Formalin-killed C. jejuni also did not protect the gnotobiotic mice from Campylobacter infection and diarrhea. It appears from the results of our initial gnotobiotic studies that antibodies in serum against the infecting strain of C. jejuni may not play an essential role in resistance to Campylobacter disease in mice.