Cell-Killing Proteins Suppress Listeria Without Killing Cells (image) North Carolina State University Share Print E-Mail Caption After infection by Listeria, cells without RIPK3 proteins (top) showed greater bacterial replication than those with RIPK3 (bottom). Bar chart (right) shows replication over a 24-hour period. Credit Kazuhito Sai, NC State University Usage Restrictions None 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.