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Wang Fang, a donator of hematopoietic stem cells from Karamay, accepts an interview in the Xinjiang Uygur autonomous region, on Dec 28. Wang donated his blood stem cells to a patient in Beijing on Dec 25, becoming the city’s fifth donator. Hematopoietic stem cell transplantation is an efficient way to treat leukemia. There are around 400 million patients in China on the waiting list for the treatment every year. [Photo/epaper.kelamayi.com.cn]