TUe-apatite (image) Eindhoven University of Technology Caption Apatite, a form of calcium phosphate and the major component of bone. Credit (c) Eindhoven University of Technology/Wouter Habraken. Usage Restrictions Provided the source is mentioned in the caption. 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.