Arthritis Research at University of Manchester (image) University of Manchester Share Print E-Mail Caption The signals generated as one DNA sample is being processed on the Illumina iScan. Each of the green and red dots represents a signal from a genetic marker which varies in intensity based on the DNA sequence of the individual. Credit University of Manchester Usage Restrictions Only for use in connection with this story. Share Print E-Mail 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.