(A) Karyogram of the U-RT1 cell line. The cell line displays a pseudo-triploid set of chromosomes with recurring abnormalities in chromosomes 1, 10, 19, and 20. (B) Overview of chromosomal aberrations in U-RT1 detected by aCGH. Green marking indicates loss of genetic material in the labelled region, red areas harbour a gain of genetic material in the corresponding chromosomal segment. Aberrations were determined using the ADM-2 algorithm of the Agilent Genomic Workbench. Arrows indicate the location of TP53 (17p13.1), CDKN2A (9p21.3), and NOTCH1 (9q34.3). CLL, chronic lymphocytic leukemia.