Pig kidneys that were frozen for a year have been brought back to life

Scientists at the University of Minnesota have successfully revived pig kidneys after storing them at -150 °C for over a year. Using a technique called vitrification, researchers infused the organs with iron oxide nanoparticles. When exposed to an electromagnetic field, these particles generate uniform heat, allowing the kidneys to rewarm without the damaging ice crystals typically associated with freezing. Once transplanted into pigs, the organs regained color and resumed urine production, marking a significant milestone in cryobiology. While the research is currently in the preprint stage and requires further validation regarding long-term function, experts believe this breakthrough could revolutionize organ transplantation. By enabling the creation of organ banks, this technology could address critical shortages, allow for better donor-recipient matching, and potentially reduce the need for lifelong immunosuppressive drugs, ultimately transforming how medical professionals manage transplant procedures and patient care.