They froze the frog, and it lived. And they hope one day they can do the same to a human.
The fact is, they knew it would because this species of wood frog lives in the abject cold, and it has evolved to be able to endure extreme weather to such a point that if it is frozen solid, properties in its blood stream will enable its cells to stay alive even after a deep freeze.
Scientists have been studying these frogs in hopes that they can provide the answers necessary to allow doctors to freeze human organs for transplant, or even further, cryogenically freeze living people to awaken them at a later date.
The moral, philosophical, and economic questions of cryogenic stasis for humans are vast, and few are better to speculate about them than Lois McMaster Bujold, author of the novel Cryoburn (www.baen.com), which chronicles how these questions are addressed in an otherworldly futuristic society. Check out the book today!