Brain revived: Scientists froze brain tissue to −196°C and it started working again

German scientists have successfully cryopreserved adult mouse hippocampal tissue, cooling it to -196°C and later rewarming it to regain electrical activity and synaptic communication. This breakthrough in cryobiology, while not enabling human cryosleep, demonstrates the potential for preserving complex brain functions. The research offers promising avenues for organ preservation and neurological studies.