Expression of miR-17-92 polycistron in various B-cell lymphoma cell lines. Northern blot analysis for 11 B-cell lymphoma cell lines, including DLBCL (3 samples), follicular lymphoma (FL; 1 sample), Burkitt lymphoma (4 samples), mantle cell lymphoma (MCL; 2 samples), and SLVL (1 sample). Fold changes in miR-17 expression are shown below the gels and adjusted to the level in SUDHL4 cells, which was assigned a value of 1.00. The presence or absence of translocations of BCL2, c-MYC, and/or CCND1/CyclinD1 is indicated in the top panel: + indicates positive; −, negative. Copy number counts for 13q31 amplification (13q31 amp) are indicated immediately above the gels: − indicates less than 2; +, 3 or more to less than 10; and ++, 10 or more.