Figure 2. Array CGH results for POAG patients versus controls. Chromosomes shown were chosen randomly as representative of all chromosomes and in all POAG patients tested. In the image, A indicates Chromosome 1; B indicates Chromosome 13; C indicates Chromosome 15; and D indicates Chromosome 18. When control DNA was hybridized against POAG DNA, a signal ratio of zero (0) was obtained, indicating the absence of chromosomal copy number alterations.