Copy number alterations detected by aCGH. Summary of the chromosomal losses and gains detected by aCGH in our patients (chromosomes are shown as ideograms). The positions of oligomers refer to Human Genome March 2006 assembly (hg18). In each experiment, log₂ ratios estimated the percentage of anomalous cells for each copy number alteration. Green bars on the left side of each chromosome represent chromosomal losses; and red bars, chromosomal gains. The width of the bars is proportional to the occurrence of a given anomaly in the 21 analyzed samples.