TY - JOUR A1 - Nuwaysir, Emile F. A1 - Huang, Wei A1 - Albert, Thomas J. A1 - Singh, Jaz A1 - Nuwaysir, Kate A1 - Pitas, Alan A1 - Richmond, Todd A1 - Gorski, Tom A1 - Berg, James P. A1 - Ballin, Jeff A1 - McCormick, Mark A1 - Norton, Jason A1 - Pollock, Tim A1 - Sumwalt, Terry A1 - Butcher, Lawrence A1 - Porter, DeAnn A1 - Molla, Michael A1 - Hall, Christine A1 - Blattner, Fred A1 - Sussman, Michael R. A1 - Wallace, Rodney L. A1 - Cerrina, Franco A1 - Green, Roland D. T1 - Gene Expression Analysis Using Oligonucleotide Arrays Produced by Maskless Photolithography Y1 - 2002/11/01 JF - Genome Research JO - Genome Research SP - 1749 EP - 1755 DO - 10.1101/gr.362402 VL - 12 IS - 11 UR - http://genome.cshlp.org/content/12/11/1749.abstract N2 - Microarrays containing 195,000 in situ synthesized oligonucleotide features have been created using a benchtop, maskless photolithographic instrument. This instrument, the Maskless Array Synthesizer (MAS), uses a digital light processor (DLP) developed by Texas Instruments. The DLP creates the patterns of UV light used in the light-directed synthesis of oligonucleotides. This digital mask eliminates the need for expensive and time-consuming chromium masks. In this report, we describe experiments in which we tested this maskless technology for DNA synthesis on glass surfaces. Parameters examined included deprotection rates, repetitive yields, and oligonucleotide length. Custom gene expression arrays were manufactured and hybridized toDrosophila melanogaster and mouse samples. Quantitative PCR was used to validate the gene expression data from the mouse arrays.[The sequence data from this study have been submitted to GEO under accession nos. GPL208, GSM2409, GSM2410, GSM2411, GSM2412, GSM2413, GSM2414, GSE81, GSE82.] ER -