E S Raveche

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The frequency of murine B lymphocytes that respond to antibodies directed against membrane IgM was measured. These anti-mu antibodies induced all, or almost all, resting B cells to enlarge over the first 24 h of stimulation. This probably represents the transition from the resting state (G0) to active transit through the cell cycle. In contrast, only a(More)
By means of a series of crosses and backcrosses, ZB.CBA/N mice were prepared bearing largely NZB autosomal genes, but having X chromosomes derived only from CBA/N mice. The CBA/N X chromosome carries a gene, xid, that is associated with the lack of a B cell subset necessary for most of the spontaneous autoantibody production by NZB mice. These ZB.CBA/N mice(More)
The genetic basis for autoimmunity in NZB mice has been investigated through analysis of recombinant inbred lines produced by mating NZB mice with two different non-autoimmune strains. Several genes (at least six) were found to be necessary for the production of eight traits characteristic of the NZB mice that were studied. No fundamental genetic defect (an(More)
The spleens of old NZB mice have an abnormal population of B cells with extra chromosomes. These hyperdiploid B cells manifest increased proliferative capacity; they grow in (NZB X DBA/2)F1 spleens after intravenous injections. Molecular analysis of individual old NZB and F1 passaged spleens demonstrate that hyperdiploid cells represent a clonal or(More)
PBMC from patients with autoimmune diseases and from normal controls were studied for the expression of several cellular oncogenes. Gene expression was assessed by Northern blot analysis of poly(A)+ RNA obtained from leukapheresis samples. Patients with SLE expressed significantly more c-myc protooncogene RNA than did normal controls. Increased expression(More)
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