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siGFP-mediated knockdown of GFP mRNA expression within GFP-hMSC aggregates. Analysis of fold changes in GFP mRNA expression of GFP-hMSC aggregates embedded with different MS formulations compared to cells only aggregates at A) 5, B) 10, C) 15 and D) 20 days in vitro culture. * p<0.05.
