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The cellular basis for resistance to induction of tolerance in BXSB SLE male mice.

The autoimmune BXSB male mouse early in life displays a resistance to tolerance induction that is common with the other autoimmune strains (MRL/1, NZB x W, and NZB) whereas its female counterpart, which in early life is immunologically normal, is easily tolerized. The cellular basis for the BXSB male's resistance to tolerance induction with DHGG was investigated by using adoptive male-female cell transfer systems. We found that irradiated female recipients of male T-depleted bone marrow cells, plus either male or female thymus cells, resisted tolerance induction, had hyperactive splenic Ig-secreting cells, and developed early glomerulonephritis. Recipients of male thymic cells plus T-depleted female bone marrow cells could be tolerized, did not have enhanced Ig secretion, and did not develop glomerulonephritis. Furthermore, donor male T-depleted bone marrow cells--but not male thymic, female thymic, or female bone marrow cells--resisted induction of tolerance before their transfer to produce lymphoid chimeras.