Cluster of Mast Cells Found Underneath Superficial Bladder Epithelium (image) Cell Press Share Print E-Mail Caption This is a cluster of mast cells found underneath superficial bladder epithelium. Credit Immunity, Chan et al. Usage Restrictions Credit Required 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.