Relative expression of genes in c‐myc‐associated rapidly progressive follicular lymphoma (RPFL) determined by RT‐PCR. Expression of c‐myc, bcl‐2, bcl‐6, NF‐κB, and IRF‐4 in c‐myc‐associated RPFL (n = 3) was compared to that in grade 1–2 follicular lymphoma (FL) (n = 3), germinal center B (GCB)‐like type diffuse large B‐cell lymphoma (DLBCL) (n = 2), activated B cell (ABC)‐like type DLBCL (n = 2), Burkitt’s lymphoma (BL) (n = 2), and reactive hyperplasia (RH) (n = 2). β‐actin was used as an endogenous control.