DNA Prayer Flags (2009) (IMAGE) Cell Press Caption This photograph shows Joe Davis' "DNA Prayer Flags" (2009) screen printed with genetic markers for currently incurable diseases. Credit Credit Required. Usage Restrictions Credit Required. 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.