Peptide Tethered to a Bacteria (image) University of Texas at Austin Share Print E-Mail Caption In the SLAY method, each bacterium is genetically engineered to produce a molecule on its cell surface that is part peptide and part tether--like a playground tetherball. This arrangement allows the peptides to mimic free-floating drugs in the human body. Credit Illustration Credit: Ashley Tucker Usage Restrictions None 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.