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J Exp Med. 1982 Feb 1;155(2):605-10.

Lack of oral tolerance in C3H/HeJ mice.


Daily gastric intubation of lipopolysaccharide (LPS)-responsive C3H/HeN, BALB/c, and Swiss mice with SRBC for 2 wk resulted in oral tolerance, whereas similarly treated LPS-nonresponsive C3H/HeJ mice gave splenic anti-SRBC PFC responses, including the IgA isotype, after systemic challenge with antigen. Oral tolerance in LPS-responsive C3H/HeN mice was due to T suppressor (Ts) cells because significant Ts cell activity was demonstrated in both Peyer's patches (PP) and spleens of these animals. On the other hand, T cells from PP and spleens of identically treated C3H/HeJ mice exhibited mainly T helper cell activity. Prior treatment of PP or spleen cell preparations from tolerant C3H/HeN mice with anti-Lyt-2.1 resulted in good in vitro anti-SRBC PFC responses, especially IgA isotype responses in PP cell cultures. These results indicate that oral administration of a thymic-dependent antigen (SRBC) to LPS-responsive mice induced a Ts cell population in PP, which, after migration to peripheral lymphoid tissue (e.g., spleen), suppressed responses to systemically administered antigen. LPS-nonresponsive mice lack this Ts cell pathway and continually respond to oral administration of antigen.

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