Oscillations and Waves (IMAGE) European Molecular Biology Laboratory Caption In this series of snapshots (kymograph), oscillations and waves of gene activity in healthy cells are seen. In cells with mutations in genes such as HES7, DLL3, and LFNG, these patterns of gene activity are stopped or disrupted, causing errors in development. Credit Ebisuya group/EMBL Usage Restrictions CC BY-SA 3.0 IGO 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.