Hybrids are made using an animal egg mixed with human genes
Regulators have given scientists the green light to create human-animal embryos for research.
The Human Fertilisation and Embryology Authority granted permission after a consultation showed the public were "at ease" with the idea.Hybrids
Scientists want to create hybrid embryos by merging human cells with animal eggs in a bid to extract stem cells. The embryos would then be destroyed within 14 days.
The cells form the basic building blocks of the body and have the potential to become any tissue, making them essential for research.
It is already illegal to implant human-animal embryos in the womb or bring them to term.