while one team works on the twins, another, led by david dunaway, constructs a frame made from pieces this central segment will be our rigid keel to hold the head together. what we need to do is make sure that the twins are rigidly together. being older, they‘re pretty active, and so whatever we do really has to be strong enough to resist the twisting and bending forces that they‘ll be putting on their heads. the first operation lasts 15 hours. zainab has seven more children back in pakistan, aged 5—16. all of them were born at home, but with this pregnancy she was advised to deliver in hospital. it was not until five days after delivery by cesarean section that zainab was introduced to her daughters, initially by photo. zainab says the twins have distinct personalities. after a month, the twins are back in theatre. this is safa‘s brain, it looks happy... this time the surgeons will separate the shared network of veins that drain blood from twin‘s brain. but disturbing this equilibrium could also do permanent damage. a portion of each twin‘s brain is being supplied by the other twin.