Conceptual Image (2 of 2) (image) University of Washington Share Print E-Mail Caption This conceptual image shows probe and target complexes at different stages of the reaction that checks for mutations. The red dots represent mutations in a target base pair, while sequences with illuminated green lights indicate that no mutation was found in the reaction. Credit Yan Liang, L2XY2.com Usage Restrictions Photo credit required. 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.