Gastric Epithelial Cells Infected with H. Pylori (IMAGE) Institut Pasteur Caption The nuclei are shown in blue (Hoechst stain), with USF1 in green and p53 in red. Credit © Lionel Costa Usage Restrictions © Lionel Costa 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.