Chlamydial Infection (IMAGE) Indiana University Caption This shows a human epithelial cell, nucleus in blue and cytoskeleton in green, with the infecting chlamydia pathogen in red. Credit Indiana University 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.