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flag A 26-year-old cancer survivor received the first-ever transplant of frozen sperm-producing stem cells to restore fertility.

flag A 26-year-old man, Jaiwen Hsu, who survived childhood bone cancer, has received the first known transplant of sperm-producing stem cells in a study at the University of Pittsburgh Medical Center. flag The study aims to restore fertility in young cancer survivors who may become infertile due to chemotherapy or radiation. flag Since 2011, the team has frozen testicular cells from about 1,000 prepubertal boys. flag While it's too early to know if the transplant was successful, the study offers hope for preserving fertility in childhood cancer survivors.

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