is this a 7 headed dragon appearing just before the end of world?
stem cell breakthrough - create chimeric animals that have organs belonging to another species by injecting stem cells into the embryo of another species.
update >>> http://www.dailymail.co.uk/news/article-2017818/Embryos-involving-genes-animals-mixed-humans-produced-secretively-past-years.html
researchers injected stem cells from rats into the embryos of mice that had been genetically altered so they could not produce their own organs, creating mice that had rat organs.
Pigs could grow human organs in stem cell breakthrough - Telegraph
the real new development is a possibility to create brand new forms, shapes of life. constructing living organisms. many shapes, functions.