Conclusion
The prompt switching to the expression of different non-IgM/IgD isotypes in PP and LN during acute, de novo GC reactions at the two types of sites suggests intrinsic differences in their microenvironments as the basis for isotype preference.
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Cebra, J.J., Logan, A.C. & Weinstein, P.D. The preference for switching to expression of the IgA isotype of antibody exhibited by B lymphocytes in Peyer's patches is likely due to intrinsic properties of their microenvironment. Immunol Res 10, 393–395 (1991). https://doi.org/10.1007/BF02919728
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DOI: https://doi.org/10.1007/BF02919728