/technologies/sensor-technology/b/blog/posts/researchers-put-mouse-brain-samples-in-suspended-animation-and-successfully-revived-themThe brain slices underwent directional cooling via a copper cylinder immersed in liquid nitrogen. (Image Credit: bioRxiv ) For the first time, scientists at the University of Erlangen-Nuremberg cryogenically froze and revived hippocampal slices of m.en-USTelligent Community 12