Gene Chip Analysis (IMAGE) University of Arizona Caption Ty Lebsack (right) and Jose Munoz-Rodriguez used “gene chips” to analyze the expression levels of more than 20,000 genes. A laser scans the chip for fluorescent markers serving as an indirect indication of the level of gene activity. Software then analyzes the resulting pattern of microscopically small dots on the chip and displays it on a computer monitor. Credit University of Arizona Usage Restrictions Use only in conjunction with posting/reporting of this news release and photo credit: D. Stolte/University of Arizona License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.