Bacteria Laden with 'Smart Nanoparticles' (IMAGE) Purdue University Caption This graphic depicts bacteria laden with "smart nanoparticles," which could carry genes, drugs, nanosensors or other cargo into the interior of cells. Researchers at Purdue University have shown that the nanoparticles could be used to precisely position cargo inside cells for the early diagnosis and treatment of cancer and other diseases. The green and red spheres represent drug-carrying polystyrene nanoparticles of varying sizes. Credit Purdue University, Discovery Park 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.