Scientists have been able to use engineered nanoparticles to grab onto toxins within the body for some time. However, until recently, safely removing the toxin-laden nanoparticles from the body has been a challenge as they can often get trapped in the liver, causing hepatitis. Now, researchers at the University of California San Diego have developed a 3D Printable hydragel that works with engineered nanoparticles to remove toxins safely. The engineered nanoparticles are embedded in the hydragel, making certain that the toxins stay inside the device until it is removed, prohibiting the toxins from slipping back into the blood stream. The system, works much like dialysis, but promises to be more efficient as it allows for user-specific, on-site devices to be printed for each patient.