Genes differentially expressed in SMZL and other small B-cell lymphomas (MCL, CLL, FL). Red and blue indicate higher and lower expression, respectively. (A) Panel of 266 genes identified by ANOVA to be up-regulated in SMZL versus other NHLs. (B) Overexpressed genes in SMZL, after normalization with nontumor spleen (FDR < 0.2).