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Biological Hybridisation / Chimerism


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[CENTER]In 1984 a chimeric [I]geep[/I] was produced by combining embryos from a goat and a sheep.
^ Geep ^

A chicken with a quail's brain has been produced by grafting portions of a quail embryo into a chicken embryo.
Last year, researchers in China reported that they had successfully fused human skin cells and rabbit eggs to create the first human chimeric embryos. The embryos were allowed to develop for several days in a laboratory setting, then destroyed to harvest the resulting stem cells.
Chimeras are not Hybrids, and they are not Mosaics.
Another thing I want to point out is the Drosophila, which is a fruit fly. What scientists believe are very similar to humans because human disease genes match that of the fruit fly. The Drosophila is being used as a genetic model for several human diseases including Parkinson's and Huntington's. They do not live long, but they reproduce like mad, so they are great by all the generations we can study of them in such a short time. And their genome has been completely mapped.
So, now in Minnesota, pigs are being born with human blood in their veins.
In Nevada, there are sheep whose livers and hearts are largely human.
In California, mice peer from their cages with human brain cells firing inside their skulls.
Chimeric cattle are not at all rare. In fact, its a natural process when they have twins. It just happens. Yay for cows. But they are [I]hematopoietic chimeras[/I]. Naturally-occurring chimerism happens, but it is very rare.
Chimeric mice and sheep-goat chimeras have been most useful in answering fundamental questions about developmental biology and pathology. There is also some potential that this technique can be applied to problems such as rescue of endangered species.
That would be fucking awesome, they say it may be possible to extend this procedure to allow embryos from severely endangered species to be carried by recipient mothers from another species.

What opinions do you have on this?

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