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The story of Harry Prentice, who needed a heart transplant when he was a teenager.
BBC Hereford and Worcester
A boy with a particularly aggressive form of leukaemia is starting treatment today to prepare him for a stem cell transplant.
Five-year-old Oscar Saxelby-Lee, from Worcester, was told he needed a transplant within three months of chemotherapy otherwise his chances of survival would "severely diminish".
In March, he was found to be free of leukaemia blast cells and three three stem cell matches were found for him after thousands of people signed up to be tested.
On Facebook, his family said he would have conditioning therapy to prepare his body so he can have the transplant after that.