Pigs With Human Brain Cells and Biological Chips: How Lab-Grown Hybrid Life Forms Are Bamboozling Scientific Ethics

In September, scientists at the Guangzhou Institutes of Biomedicine and Health announced they had successfully grown "humanized" kidneys inside pig embryos. The scientists genetically altered the embryos to remove their ability to grow a kidney, then injected them with human stem cells. The embryos were then implanted into a sow and allowed to develop for […]