The following sentence is amended as follows:
Original text:
Then each gel was transferred into individual wells of 24-well plates containing 1 ml osteogenic media (10 mM β-glycerophosphate (CalBiochem, Billerica, MA), 50 μM ascorbic acid (Wako USA, Richmond, VA), 100 nM dexamethasone (MP Biomedicals, Solon, OH) and 100 ng/ml BMP-2 (Department of Developmental Biology, University of Würzburg, Germany).
New text (bold text was added):
Then each gel was transferred into individual wells of 24-well plates containing 1 ml osteogenic media (DMEM-LG, 10% FBS, 1% pen/strep (Fisher Scientific), 10 mM β-glycerophosphate (CalBiochem, Billerica, MA), 50 μM ascorbic acid (Wako USA, Richmond, VA), 100 nM dexamethasone (MP Biomedicals, Solon, OH) and 100 ng/ml BMP-2 (Department of Developmental Biology, University of Würzburg, Germany).
The authors would like to apologise for any inconvenience caused.
