Cryopets

the long-awaited paper showing structural preservation of a human cryopreservation patient’s brain from greg fahy et al is out we can see clearly identifiable synapses, intact membranes, and no evidence of ice damage, even after years in liquid nitrogen storage 🧊🧠

Something extraordinary just happened in biology Researchers demonstrated that whole mammalian brains can be cryopreserved without ice damage - preserving neurons and synapses at microscopic resolution. This may mean that the physical structure that stores memory and identity can survive deep freezing 👀 In other words, cryonics may be legit. A new research paper shows that entire mammalian brains (from rabbits and pigs) can be preserved using vitrification - an ice free cryopreservation method, that prevents the destructive ice crystals normally formed during freezing. High resolution imaging revealed that neurons, synapses, and other critical brain architecture remain largely intact after the process, with no obvious ice damage. The technique avoids chemical fixation, preserving native molecular states, and may allow rehydration that restores normal anatomical features if carefully controlled. The authors conclude that this approach could be a viable way to preserve complex brains long term without structural degradation, opening the door for deeper research into preservation tech and future applications. from paper: "We conclude that both animal and human brains can be cryopreserved by vitrification with predominant retention of ultrastructural integrity without the need for prior aldehyde fixation. This observation has direct relevance to the feasibility of human cryopreservation, for which direct evidence has been lacking until this report. It also provides a starting point for perfecting brain cryopreservation, which may be necessary for lengthy space travel and could allow future medical time travel." This is insane

we've just acquired something very cool 🥶