Cell Wall Labeling (IMAGE) Indiana University Caption Chlamydia peptidoglycan (green) is revealed by a new cell wall labeling method. Chlamydial inclusions containing multiple cells are seen with cells labeled in red. The host cell nucleus is labeled in blue. Credit Erkin Kuru Usage Restrictions None 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.