Frequency of DNA gains (up) and losses (down) observed in MZL. (A) 218 MZL, (B) 57 MALT lymphoma, (C) 134 splenic MZL, and (D) 25 nodal MZL samples. Red represents gains with associated up-regulated transcripts; and blue, losses with associated down-regulated transcripts. x-axis represents chromosome localization and physical mapping; and y-axis, proportion of cases showing the aberrations.