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Cell Immunol. 1995 Jun;163(1):19-29.

Effect of in vivo depletion of CD4+ and CD8+ cells on the induction and maintenance of oral tolerance.

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Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati, Ohio 45267-0524, USA.


The role of CD8+ and CD4+ cells in the generation and maintenance of high-dose oral tolerance has been investigated. Mice depleted of CD8+ cells prior to or subsequent to oral tolerization with OVA continued to express suppressed humoral and/or T cell proliferative responses to the homologous antigen. To assess the effect of CD4+ cell depletion on oral tolerance, mice were depleted of CD4+ cells prior to or subsequent to oral tolerization with OVA. After 50% regeneration of CD4+ cells was achieved, OVA-immunized mice produced anti-OVA immune responses that were comparable to those of water-fed control mice. Thus, under our experimental conditions the presence of CD4+ but not CD8+ cells is required to both establish and maintain oral tolerance.

[Indexed for MEDLINE]

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