ArrayAssist Copy Number Software (Stratagene Corp.) enables manipulation and analysis of the massive data sets generated by chromosomal copy number microarrays. All ArrayAssist applications offer GeneChip-compatible status with the Affymetrix platform. They will soon be provided as universal binaries, able to run natively on the latest Intel-based Macintosh computers, and are compatible with Mac OS X, Windows, and Linux. The software supports the identification of biomarkers for cancer, degenerative disease and developmental disorders by highlighting chromosomal amplifications and deletions. Biologists can compare experimental data in ArrayAssist CopyNumber with a reference genome using ArrayAssist's integrated genome browser and map biological pathways for a comprehensive understanding of the relevant relationships in their system with the integration of Stratagene’s PathwayArchitect platform.