Researchers made human-monkey chimeras, by adding human stem cells to monkey embryos. Some embryos were cultured for 19 days after fertilisation.
A growing international divide over cutting-edge medical research could worsen predatory practices, medical tourism and health inequality.
The idea of human-animal hybrids can raise a lot of questions and it’s easy to feel they are “unnatural” because they violate the boundaries between species.
The concept of creating human-animal hybrids can be eerie, but that’s only because of the way our minds tend to categorise things.