Array-CGH of PC cell lines. A gain (>4 copies, red) and a deletion (<0.5 copies, blue) of genomic copy number are shown. (A) Array-CGH of chromosome 12. The homozygous deletion of the ACVR1B gene was found in the Sui65 and Sui68 cell lines. (B) Array-CGH of chromosome 18. The homozygous deletion of the SMAD4 gene was found in the Sui65, Sui70, and Sui71 cell lines.