Bladder Lining (image) Washington University School of Medicine Caption After infection with E. coli bacteria, the major cause of urinary infections, the bladder works to repair damage to its lining. Newly forming cells are outlined in pink and have bright yellow speckled nuclei. In bladders of menopausal mice, this process is disrupted. New cells keep forming, but the barrier (highlighted in teal) is not fully repaired. Credit Wang and Mysorekar, Washington University School of Medicine in St. Louis Usage Restrictions None 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.