Frozen mice cloned - are woolly mammoths next?

piggy submitted, created time 2 months 3 days (www.reuters.com)

WASHINGTON (Reuters) - Japanese scientists have cloned mice whose bodies were frozen for as long sixteen years and said on Monday it may be possible to use the technique to resurrect mammoths and other extinct species.

Mouse cloning expert Teruhiko Wakayama and colleagues at the Center for Developmental Biology, at Japan's RIKEN research institute in Yokohama, managed to clone the mice even though their cells had burst.

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Part human, part cow embryos made in UK

Further review of "three-parent" embryo technique

Darkfrog submitted, created time 11 months 1 day (www.nature.com)

This is another discussion of the mother-father-mitochondiadonor embryo that I mentioned the other day. It is significantly more revealing. It seems that the mitochondrial transfer involved moving nuclear DNA from the diseased embryo to the healthy one instead of into an ovum from another source.

It also discusses their methods. It seems that the exchange was performed in embryos that had failed in other experiments. The ten successes came from many failures. The specific success to failure ratio is not given.

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Human Embryos Cloned From Skin Cells

Eric wu submitted, created time 11 months 2 weeks (sciencenow.sciencemag.org)

A new breakthrough on stem-cell research!

A major breakthrough occurred last year when scientists figured out how to turn skin cells into ES-like cells. But they still want to be able to do cloning, otherwise known as somatic cell nuclear transfer (SCNT), because embryonic cells are the "gold standard" for pluripotent cells--cells that can become any cell type in the body. In addition, scientists want to learn more about how an oocyte can reprogram a mature cell back into an ES cell.

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