Loss of CBP or p300 attenuates BCR-inducible gene expression. Real-time RT-qPCR of RNA from FACS-purified splenic B cells of the indicated genotypes following 4 hours treatment with or without soluble anti-IgM. Test gene expression was normalized to signal derived from β-actin mRNA and then normalized to the lowest signal for each gene in a given experiment. Gene tested and the number of mice of each genotype are indicated (mean ± SEM).