Mouse is the most widely used mammalian model in biological research and target identification. This microarray will enable researchers to simultaneously characterize expression activities of many thousands of mouse genes associated with various biological functions and processes. Content for this empirically validated microarray includes a comprehensive set of toxicology markers determined through collaboration with leaders in toxicogenomics including NIEHS, Toxicogenomics Research Consortium, and Paradigm Genetics. . Arrays of this design have barcodes that begin with 16011978 or 2511978.. . Orientation: Features are numbered numbered Left-to-Right, Top-to-Bottom as scanned by an Agilent scanner (barcode on the left, DNA on the back surface, scanned through the glass), matching the FeatureNum output from Agilent's Feature Extraction software.. . The ID column represents the Agilent Feature Extraction feature number.. . Rows and columns are numbered as scanned by an Axon Scanner (barcode on the bottom, DNA on the front surface).. . To match data scanned on an Axon scanner, use the RefNumber column contained in the Agilent-provided GAL file as the ID_REF column in sample submissions.. . *** A different version of this platform with the Agilent Probe names in the ID column is assigned accession number GPL6466.