Frog That Gives Birth Through Mouth to be Brought Back From Extinction

The team recovered cell nuclei from tissues collected in 1970 that were kept in a freezer, according to the university. Researchers took donor eggs from the distantly related great barred frog, and replaced their nuclei with dead nuclei from the gastric-brooding frog.
The embryos only lived for a few days, but researchers were able to confirm that the cells contain the gastric-brooding frog’s genetic material. Archer said that he is confident that the hurdles the Lararus Project team faces are “technological and not biological.”
“Importantly, we’ve demonstrated already the great promise this technology has as a conservation tool when hundreds of the world’s amphibian species are in catastrophic decline,” he said.

http://abcnews.go.com/blogs/technology/2013/03/frog-that-gives-birth-through-mouth-to-be-brought-back-from-extinction/