We have shown that systemic administration of rmIL-12 could trigger Th1-type responses to a protein antigen delivered orally with CT as mucosal adjuvant. The most striking finding was that IL-12 could retain its regulatory effects when orally administered and could redirect the immune response to the oral vaccine toward a Th1-type. However, regulation by orally administered IL-12 differed from parenteral treatment with IL-12 since only the latter treatment affected mucosal S-IgA responses. These findings have important implications for the development of mucosal vaccines that induce the desired immune response.
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| http://dx.doi.org/10.1111/j.1749-6632.1996.tb52693.x | DOI Listing |
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