Tooth -- Mesenchymal Stem Cells (IMAGE) University of Plymouth Caption Pictured is a group of mesenchymal stem cells (traced in green) migrating into a tooth to further regenerate the tissue and organ Credit University of Plymouth Usage Restrictions None 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.