Ten years ago, Nicola and Jim Walker received the news every parent dreads when their then-two-year-old daughter Abby was diagnosed with leukaemia. It prompted the couple to take a controversial course of action: to fall pregnant with another child and harvest stem cells from the baby’s umbilical cord in case Abby relapsed and needed a transplant.
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Source Credits: Emily Porrello and Belinda Hawkins in ABC News. Image above is for illustrative purpose only and is not of the family.