Figure 3.

Northern blot analysis to confirm differential transcription of lymphoma-specific genes. A ³²P-labeled pL1–14 (plasmid containing cDNA homologous to the 3′-untranslated region of the set gene) (a) and a PCR fragment of the COX-II gene (b) were hybridized to RNA isolated from naive normal B lymphocytes (lane 1), lymphoma A (lane 2), and lymph node (lane 3). As a control, rehybridization with a ³²P-labeled PCR fragment of β-actin gene was used (on the bottom).