Dexamethasone suppression of NF-kB activity in HemSCs. Panel A, immunoblotting of HemSCs, treated or untreated with dexamethasone, with anti phosphorylated p65 antibody. Panel B, NF-κB DNA-complexing activity assay. Nuclear extracts of HemSCs, treated or untreated with dexamethasone were assayed for the binding to a NF-κB consensus binding site. Positive and negative controls are detailed in the Results section.