DNA Prayer Flags (2009) (image) Cell Press Share Print E-Mail 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. 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.