Nanofluidic drug-eluting seed (IMAGE) Houston Methodist Caption Houston Methodist Research Institute nanomedicine researchers used an implantable nanofluidic device smaller than a grain of rice to deliver immunotherapy directly into a pancreatic tumor. Credit Houston Methodist Usage Restrictions N/A 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.