The microarray facility provides state-of-the-art instrumentation and protocols for gene expression analysis. It includes a complete Affymetrix microarray work station, comprising a GeneChip Hybridization Oven, a GeneChip Fluidics Station and a GeneChip Scanner. The platform can be used for transcriptome and genome-wide protein-DNA interaction studies. Labeling of RNA and DNA samples is performed using well-tested and reproducible protocols to maximize sensitivity and minimize experimental noise. Bioinformatics tools and software are available for data analysis. Together with the expertise of the computational biology groups, the microarray facility thus permits state-of-the art transcriptome analysis, genome occupancy profiling, and interpretation of the data.