Scientists have created human embryos which are part-male and part-female. The embryos, which survived for six days, were made to test a treatment for genetic diseases, as reported by the Guardian. Experts at the European Society for Human Reproduction and Embryology meeting in Madrid yesterday rounded on the team that created the "she-male" embryos, denouncing the work as flawed, pointless and damaging to the public image of fertility specialists. Norbert Gleicher, a fertility specialist at the Centre for Human Reproduction in Chicago, claimed that creating "chimeric" people - those made from more than one fertilised egg - could be a way to cure children born through IVF of genetic diseases. If genetic screening showed an IVF embryo to have a disease, there was a chance, he said, that injecting it with cells containing a good copy of the damaged gene could prevent the disease from developing. For the technique to work in most cases the "good genes" would have to get to the right part of the body.