The protein Sema3A both restrains bone degradation and stimulates bone building in mice, suggesting a potential therapy for conditions such as osteoporosis. See Article p.69
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Zaidi, M., Iqbal, J. Double protection for weakened bones. Nature 485, 47–48 (2012). https://doi.org/10.1038/485047a
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DOI: https://doi.org/10.1038/485047a