Development <em>in vivo</em> (IMAGE) University of Basel Caption Development of cartilage tissue from mesenchymal stem/stromal cells after eight weeks in vivo: Inhibition of the signaling pathway of the protein BMP leads to the maintenance of stable cartilage tissue, indicated by red staining (left). In contrast, the control group shows a development towards bone tissue (right). Credit Image: University of Basel, Department of Biomedicine Usage Restrictions Use of the image requires proper credit line. 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.