Comparison of CA-STAT5b⁺ B cells and HL cell lines. (A) Flow cytometric analysis of L428 and CA-STAT5b⁺ tonsil B cells. Thin lines are matched isotype controls. Data are from 1 representative experiment of 5 originated from different donors. (B,C) Comparison of expression of a number of genes in CA-STAT5b⁺ B cells and HL cell lines. The EBV-transformed B-cell line JY, the GC-type diffuse large B-cell lymphoma cell line LY-7, and the Burkitt lymphoma cell line Ramos served as negative controls, and 2 HL cell lines L428 and L1236 served as positive controls. (B) Four different CA-STAT5b⁺ tonsil B-cell lines cultured with CD40L-expressing L cells were analyzed. (C) PB and tonsillar B cells transduced with CA-STAT5b were cultured with or without CD40L-expressing L cells and analyzed for EBV- and HL-specific gene expression.