A Mouse Kidney Under the Microscope (Detail) (image) Max Delbrück Center for Molecular Medicine in the Helmholtz Association Share Print E-Mail Caption Cross-sections of two collecting ducts are shown. Tissue proteins are colored with fluorescent dyes: aquaporin 2 (red), F-actin (yellow), tight junction protein 1 (green) and cell nuclei (DAPI, blue). Credit Credit: Janett Ruffert, Kai Schmidt-Ott, MDC Usage Restrictions None 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.