Illustration of Protein Membranes (IMAGE) University of Texas at Austin Caption Protein pores found in cell membranes were incorporated at high density into polymer sheets that were stacked to create highly efficient filtration membranes. Credit Cockrell School of Engineering, The University of Texas at Austin 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.