A new method for selecting aptamers (IMAGE) Penn State Caption A new method for selecting aptamers, or "chemical antibodies," created by Penn State engineers takes only days to complete, instead of the months typically needed for traditional methods. Credit Kate Myers/Penn State Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.