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Survival for some endangered species hinges on 'Frozen Zoo'

Discussion in 'Yahoo News: Zoos' started by RSS, 9 Mar 2015.

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    ESCONDIDO, Calif. (AP) — Whenever an endangered animal dies at the San Diego Zoo, researchers race out, regardless of the hour, to remove its sperm or eggs, maybe a bit of ear or eyeball, and carefully freeze the cells in liquid nitrogen. More...