Zebrafish bone cells (IMAGE) Kanazawa University Caption Osteoclasts and osteoblasts in zebrafish scales were fluorescently labeled with GFP (green) and mCherry (red), respectively. A nucleus is shown in gray. Osteoclasts receive messages from osteoblasts via extracellular vesicles (blue arrows) and fuse to form a multinucleated giant cell in the bone tissue. Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. 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.