Figure 3

Western blotting of ED1 (Marker of activated microglia) and TRAIL (tumor necrosis factor-related apoptosis-inducing ligand). Brains were treated with PBS or rAAV2/IL12 and then implanted with tumor on the last day of Week 2 post viral vector injection. The brains were used for Western blotting analysis of the expression of ED1, 34 kDa, and TRAIL, 104 kDa, from microglial cells on the last day of week 1, 2, and 3 following tumor implantation. The brain slices for Western blotting analysis are shown at the bottom. All brains were harvested on the last day of week 1, week 2, and week 3 post tumor implantation. The scale bars indicate 2 mm in brain sections.