Sticker in syringe (IMAGE) Northwestern University Caption The sticker is so small and flexible that — when rolled up — it can fit inside a syringe for non-invasive injection into the body. Credit Northwestern University Usage Restrictions Add credit License Original 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.