US-Chinese team of scientists have produced embryos that include human cells and cells of a nonhuman primate, the long-tailed macaque. What are we to make of such experiments? How are we to assess their ethical implications? Historical precedent The first thing to note is that this is by no means the first attempt to produce creatures that […]
Researchers in China and the United States have injected human stem cells into primate embryos and grown chimeric embryos for up to 20 days. Despite ethical concerns, the scientists says that the procedure has potential for providing insights into developmental biology and evolution, into disease and transplants, and into drug development. “As we are unable […]