Bacteriophages in Work (image) University of Helsinki Share Print E-Mail Caption This is a lawn of bacteria into which bacteriophages have eaten holes by killing the bacteria they have infected. Credit M Skurnik Lab / University of Helsinki Usage Restrictions the image may only be used with appropriate caption and credit. 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.