Expression of NF-κB–or Bcl-3–dependent target genes and IL9 in lymphoma cell lines. (A) Expression analysis of classic NF-κB target genes. Whole-cell extracts of various lymphoma cell lines were analyzed for expression of TRAF-1, Bcl-x_L, and cIAP-2 by Western blot. (B) Expression of Bcl-3–dependent genes. mRNA analysis of IL10, SERPINB1, SLPI, and, as control, GAPDH of various lymphoma cell lines by Northern blot. (C) IL9 mRNA expression analysis of various lymphoma cell lines by Northern blot. GAPDH expression is shown as control.