RUNX2 and infection: Ciglitazone at a concentration of 5 μMdecreased the T3-induced expression of Runx2 by 36%.Ad-PPARγ infection decreased the expression of Runx2 mRNAby 54% in the absence of ciglitazone and by 66% in thepresence of 5 μM of ciglitazone.