1
Mother’s
fertilised egg
2
Donor’s
fertilised egg
3
Donor egg
Unhealthy
mitochondria
Healthy
mitochondria
Nucleus
Parents’ nuclear material removed and kept
Donor nuclear material removed and destroyed
Parents’ nuclear material placed inside donor egg
How mitochondrial donation treatment works
1
Mother’s fertilised egg
2
Donor’s fertilised egg
3
Donor egg
Unhealthy
mitochondria
Healthy
mitochondria
Nucleus
Parents’ nuclear material removed and kept
Donor nuclear material removed and destroyed
Parents’ nuclear material placed inside donor egg