Wang Cansen from China was diagnosed with leukaemia at the age of four. Doctors informed his parents that without a transplant, he would die so his parents had to apply for special permission to have a second baby.

Baby girl, born on January is a perfect donor match for her brother. Doctors have been able to save samples from the baby girl’s placenta and umbilical cord which will be used to give life-saving treatment to her brother later this month.

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