2 Fat-Derived Stem Cells (image) University of California - San Diego Caption Two fat-derived stem cells display a continuous cytoskeleton, indicating that they have fused together. Bone marrow-derived stem cell fail to fuse under similar conditions in the lab. Credit Image Credit: Yu Suk Choi Usage Restrictions Credit required 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.