Doctors stunned the world last week when they revealed that they had helped a 27-year-old woman give birth—using ovarian tissue cryopreserved a decade earlier.
The mother battled sickle cell anemia as a child and froze the tissue when she was 13 years old, before undergoing chemotherapy, which can imperil fertility. What’s especially remarkable is that the patient hadn’t started menstruating at the time of the procedure—she didn’t get her first period until doctors grafted the tissue onto her remaining ovary in her twenties. She became pregnant just a few years later.
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