CT Scan (IMAGE) Australian National University Caption This is a CT scan and the structure of the right maxillary P3 - M2 of Homo luzonensis from Callao Cave. Credit Callao Cave Research Project 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.