Comparative Genomic Hybridization (CGH) platforms from Arrayit, Sunnyvale, Calif, are designed to provide speed, precision, and affordability while remaining easy to install and implement. Arrayit CGH platforms utilize 4,000 element long-mer oligonucleotide microarrays, two-color fluorescent labeling and scanning, and single-cell amplification kits to enable medical research focused on karyotyping, in vitro fertilization, preimplantation genetic diagnosis, and other applications. Platforms include all of the instruments, tools, kits, and reagents to perform CGH analysis in a basic research or clinical laboratory. For research use only. For more information, visit Arrayit.