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J. Exp. Med.,
Volume 188, Number 7, October 5, 1998 1247-1254
By

From the * Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544; and
the Anti-DNA antibodies are regulated in normal individuals but are found in high concentration
in the serum of systemic lupus erythematosus (SLE) patients and the MRL lpr/lpr mouse
model of SLE. We previously studied the regulation of anti-double-stranded (ds)DNA and
anti-single-stranded (ss)DNA B cells in a nonautoimmune background by generating mice carrying immunoglobulin transgenes coding for anti-DNAs derived from MRL lpr/lpr. Anti-dsDNA B cells undergo receptor editing, but anti-ssDNA B cells seem to be functionally silenced. Here we have investigated how anti-DNA B cells are regulated in recombination-
activating gene (RAG)-2
Fox Chase Cancer Center, Institute for Cancer Research, Philadelphia, Pennsylvania 19111
/
mice. In this setting, anti-dsDNA B cells are eliminated by apoptosis in the bone marrow and anti-ssDNA B cells are partially activated.
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