Figure 3
Comparing log2 ratio of SNP array data with 
for the GBM data set. (a) log2 ratios of the SNP array data for 154 GBM patients [17] are drawn for the region from 52,767 to 55,790 KB in chr7. Stronger red presents a larger log2 ratio, representing amplifications. Amplifications are abundant in this region. (b) 
in the corresponding regions of (a) are presented. Probes with nonzero values in are drawn in red (blue) for amplifications (deletions). EGFR, a GBM gene, is located in this region. (c) 
from multiple samples are drawn for the same region. A part of the region from 54,145 to 55,790 KB is detected as a focal aberration.