San Diego Zoo scientists revive cells from 40-year deep freeze to clone endangered horse
You may have heard of Dolly, the sheep - now meet Kurt, the horse! Specifically, Kurt is a newborn Przewalski's wild horse, originally found on the steppes of Central Asia. But Kurt's story is much more complicated than that. You see, he is a clone from a horse that had its cells frozen 40 years ago. It's the latest in the struggle to use advances in reproductive technology to save endangered species - possibly even having the potential to bring recently-extinct species back to life.
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