Frozen testicular tissue still viable after 20 years



After being transferred to an infertile mouse, testes tissue from a rat that had been frozen for more than two decades gave rise to sperm and germ cells. (Image: Eoin Whelan/PLOS Biology/CC-BY 4.0 https://creativecommons.org/licenses/by/4.0)
https://penntoday.upenn.edu/news/frozen-testicular-tissue-still-viable-after-20-years

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