Bone Differentiation Image (IMAGE) American University Caption Dental follicle stem cells cultured on different scaffolds for 10, 20 and 30 days. Alizarin red stain was used to detect stem cell mineralization (the red indicates the bone mineralization). Bone differentiation rate of cells on the cellulose-nanocrystal scaffold was faster compared to the bioplastics scaffold. Credit Martin Chiang, National Institute of Standards and Technology. Usage Restrictions Proper crediting: Martin Chiang, National Institute of Standards and Technology. 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.