Scientists from Friedrich-Alexander University in Germany conducted experiments using small pieces of brain tissue from mice. The study was published in the Proceedings of the National Academy of Sciences.
The tissue was cooled to extremely low temperatures using liquid nitrogen.
According to ECONEWS, the tissue was stored at around minus 150 degrees Celsius for up to seven days.
When the researchers thawed the tissue, the nerve cells began sending electrical signals again.
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To prevent damage, the researchers used a method that prevents the formation of ice crystals. Ice can normally destroy cells and connections within the tissue.
Far from revival
The experiment is not about reviving an entire brain or bringing humans back to life. The researchers stressed that such possibilities remain far from reality.
Instead, the method could become important for research and medicine. According to the university, it may help preserve rare brain tissue for longer periods without damaging it.
The researchers also examined whether the connections between nerve cells could still change after thawing. This ability is important for memory and learning.
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Frozen animals
The technology could also have implications for nature conservation and biodiversity.
Several research centers already store cells from endangered animals in large freezing facilities.
According to ECONEWS, the San Diego Zoo Wildlife Alliance says its Frozen Zoo contains living cells from more than 11,500 animals.
Sources: ECONEWS and Proceedings of the National Academy of Sciences.
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