Interleukin-7 expanded bone marrow immature B cells from B1-8h/3-83(kappa)/Mx-Cre mice were recultured in the absence of interleukin-7 and in the presence of interferon-(alpha)(beta) for 2 days and sorted by FACS for surface IgM low expression. The U74Av2 probe arrays were subjected to U74A mask corrections, and all target hybridization intensities were scaled to 1500 arbitrary units using Microarray Suite 5.0 (Affymetrix). (Tze etal. Public Library of Science Biology, In Press 2005) Raw data obtained from Affymetrix Suite 5.0 program with all arrays subjected to MG-U74A mask corrections and scaling to taget intensity of '1500'. Listed are all probe sets excluding masked probe sets and Affymetrix hybridization control probe sets. Keywords = bone marrow B cells