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IL-15 deficiency attenuated osteonecrosis in mice with steroid-induced ONFH. a The observation of femoral head osteonecrosis by Hematoxylin-Eosin staining. b BMD and BMC were improved for IL-15 deficiency. Sham = operated control group, WT ON = osteonecrosis WT group, Il15−/− = osteonecrosis IL-15 deficiency group. The data were expressed as means ± SD (n = 6). **p < 0.01 versus the WT ON group
