GoKawiilScientists revive pig kidneys frozen for over a year, successfully transplant them
Researchers cryopreserved pig kidneys in a glass-like frozen state—one for more than a year—then rewarmed and tested them before transplanting them into pigs. The organs regained color and produced urine, indicating they functioned after transplant. The team says it is a major step but still needs to determine whether the technique translates to human organs.