This single 44K formatted microarray represents a compiled view of the human genome as it is understood today. The sequence information used to design this product was derived from a broad survey of well known sources such as RefSeq, Goldenpath, Ensembl, Unigene and others. The resulting view of the human genome covers 41K unique genes and transcripts which have been verified and optimized by alignment to the human genome assembly and by Agilent's Empirical Validation process.. . Arrays of this design have barcodes that begin with 16012391 or 2512391.. . 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 GPL6848.