Figure 3.

Comparative genomic hybridisation (CGH) on human cDNA clones microarrayed onto a glass slide. The slide was hybridised simultaneously to normal DNA (green) and DNA from a breast cancer cell line (red). (a) Complete array of 6,000 cDNAs; (b) magnified region of the array showing the CERBB2 gene (arrow). The red colour of this array point indicates that the CERBB2 gene is amplified. Figure provided by Jeremy Clark.