A pig kidney stored for over a year reportedly produced urine after nanowarming

MIT Technology Review reports researchers vitrified pig kidneys at -150 °C and rewarmed them using nanoparticles and a radiofrequency field. One stored for over a year produced urine on a perfusion machine; other rewarmed kidneys were transplanted into pigs and monitored for two hours. The kidneys showed injury and produced less urine than expected, and whether they can sustain life long-term remains untested. The research is a preprint that has not yet been peer-reviewed.