Tumor Penetration (IMAGE) Drexel University Caption This unique drug delivery strategy involves the decoration of nanovehicles with enzymes known to break down hyaluronic acid. Credit Drexel University 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.