Breakthrough as scientists grow sheep embryos containing human cells

Advance brings us closer to growing transplant organs inside animals or being able to genetically tailor compatible organs, say researchers

Growing human organs inside other animals has taken another step away from science-fiction, with researchers announcing they have grown sheep embryos containing human cells.

Scientists say growing human organs inside animals could not only increase supply, but also offer the possibility of genetically tailoring the organs to be compatible with the immune system of the patient receiving them, by using the patient's own cells in the procedure, removing the possibility of rejection.