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Primary BMSCs enhanced the activity and inhibited the apoptosis of primary OB in co-cultured system. Primary BMSCs and OB were co-cultured for 3 days in noncontact co-cultured system. A. The activity of OB was examined by MTT assay. B. The apoptosis of OB was measured by dual Annexin V-FITC and PI staining, following flow cytometry analysis. C. The result of flow cytometry analysis was quantified.
