The very cold, the merely chilled, and the colorful
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A handful of species have learned how to survive in freezing climates. To do so, the animals must counteract the damaging effects of ice crystal formation, or keep from freezing altogether. Here are a few ways they do it.
Watch as the astounding wood frog uses cellular cryopreservation tricks to freeze, thaw, and live to croak about it.
Why scientists are so near and yet so far from being able to cryopreserve organs
Even after 18 years of frozen storage, human embryos can still produce viable stem cells for drug screening and biomedical research.
Pierre Comizzoli, a reproductive physiologist at the Smithsonian Conservation Biology Institute, chats about his efforts to rescue endangered species from extinction using in vitro fertilization as well as novel gamete preservation techniques.
A National Zoo researcher works to perfect gamete preservation and in vitro fertilization techniques in order to better manage endangered populations.
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