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The expression of SP7/Osterix in the femoral heads of the seven groups: A–C: 4-week model group; D–F: 4-week normal saline group; G–I: 4-week HUCMSC-treated group; J–L: normal group; M–O: 8-week model group; P–R: 8-week normal saline group; S–U: 8-week HUCMSC-treated group; V: SP7/Osterix expression in each group (scale bars: 20 × = 100 μm,★★★p < 0.001).
