Walton -- Mummy Argonne Experiment 1 (image) Northwestern University Share Print E-Mail Caption Northwestern University's Stuart Stock and The Art Institute of Chicago's Rachel Sabino discuss the X-ray scattering experiment at Argonne National Laboratory performed Nov. 27 on an 1,900-year-old portrait mummy. Credit Photo credit Jim Prisching Usage Restrictions Credit must be given. Share Print E-Mail 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.