Hecht Mobility Graphs (image) Princeton University Share Print E-Mail Caption Flies bred to express the Alzheimer's peptide A maintained their climbing ability longer after receiving the D737 compound (black bars) than flies that did not receive the compound (gray bars). The top panel shows flies with the standard A gene, while the bottom panel shows flies with a disease-causing mutant gene. Credit Image courtesy of Angela Fortner McKoy Usage Restrictions None 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.