chimera

(Newser) - Human-animal chimeras are taking over the barnyard. A year after a research team announced they had created the first animal-human chimera by way of pig embryos containing human cells, they've done it again, the Guardian reports. This time it's sheep embryos with human cells. The goal is to...

(Newser) - Researchers have created part-human-part-pig embryos in what other scientists are calling an "exciting" step toward proving the viability of human-animal chimeras, the BBC reports. The researchers injected human stem cells into pig embryos, then implanted those embryos into adult pigs. After a month or so, the developing pig was...

(Newser) - Deciding that, you know what, humans can play God after all, the National Institutes of Health is lifting a year-old moratorium on federal funding for the creation of partially human animal embryos, otherwise known as chimeras. NPR reports the NIH had instituted the moratorium over ethical concerns—like what happens...

(Newser) - Japanese researchers have hit on a stem cell breakthrough that they say could essentially solve the organ shortages problem—but fair warning, it’s weird. By injecting stem cells from rats into the embryos of mice that had been genetically modified to be unable to grow their own organs, the...