by Mary Ann Liebert, Inc Figure 1. The long-term expression of hFIX in wild-type C57BL/6 mice pretreated with dexamethasone. (A) The schematic of the dexamethasone and AAV9/hFIX administrations and serum collection from blood. Dexamethasone (0.2 mg/mouse) or PBS was injected 2 h before 1 × 1010 vg of AAV9/hFIX vectors per mouse were administered through the retro-orbital vein. The...