Kaplan-Meier curves of OS of 30 patients analyzed for BCL-6 expression by real-time RT-PCR and immunohistochemistry.

Red curve, OS of DLBCL patients expressing BCL-6 protein in more than 10% of malignant cells by immunohistochemistry; blue curve, OS of DLBCL patients expressing BCL-6 protein in less than 10% of malignant cells by immunohistochemistry; green curve, OS of DLBCL patients with high (greater than 1.3) BCL-6 mRNA expression; pink curve, OS of DLBCL patients with low (no more than 1.3) BCL-6 mRNA expression.