Evolution of Caulobacterales (IMAGE) Indiana University Caption In this image, the red section shows the lytic cycle, a process by which viruses kill bacterial cells to produce new virus particles with help from an enzyme, represented as a 'Pac-Man' with razor-sharp teeth. In Caulobacterales, the enzyme's 'teeth' are now blunt, helping bacteria grow new stalks through the process shown in blue. Credit Image by Amelia Randich, Indiana University Usage Restrictions Credit Amelia Randich, Indiana University 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.