Anticancer therapies can impair male fertility. Whereas men can opt to freeze their sperm before treatment, young boys don't produce mature sperm and so lack this choice. Work in mice offers hope for such patients. See Letter p.504
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Seandel, M., Rafii, S. In vitro sperm maturation. Nature 471, 453–454 (2011). https://doi.org/10.1038/471453a
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DOI: https://doi.org/10.1038/471453a
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