FIGURE 5.
Autoradiography of tumors injected with GLV-1h153. (A) Tissue radio-gram using 99mTcO4 revealed hot spots of radiouptake in GLV-1h153 tumors correlating with expression of GFP and Hoechst staining, revealing requirement for both presence of GLV-1h153 infection and adequate blood flow to deliver radiotracer. Areas that lacked GFP and thus virus and areas noted on H&E staining to be necrotic and lacking blood flow did not support up-take. No uptake was noted in untreated control tumors despite adequate blood flow. (B) Enlarged merged sections correlated hot spots with GFP and Hoechst dye (shown with arrows).