a positive trendp = 0.055
A positive trend between ALP activity and Oil Red O staining (R 2 = 0.405, p = 0.055) almost reached significance ( Fig. 5F ), giving a clear indication that MSC populations with strong adipogenesis are not weak in osteogenesis and vice versa as this may be expected from the in vivo observation that during lifetime the bone marrow is replaced by fat marrow.