Clock and wavefront (IMAGE) University of California - San Diego Caption An artistic depiction of cells in the clock-and-wavefront process, a sophisticated development patterning mechanism associated with multicellular organisms. Communities of unicellular organisms were thought to be devoid of such sophisticated patterning. Credit Nicholas Wilson. Usage Restrictions Must be used in conjunction with Cell paper on biofilm patterns discovery. License Original 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.