Researchers (image) Massachusetts Institute of Technology Share Print E-Mail Caption This photo shows Zachary P. Gates (left) and Brad Pentelute with their Xenoprotein etching. Credit Rachael Fuller Usage Restrictions Images for download are made available to non-commercial entities, press and the general public under a Creative Commons Attribution Non-Commercial No Derivatives license. You may not alter the images provided, other than to crop them to size. A credit line must be used when reproducing images. 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.