Fig. 5.

Scintigraphic image of a tumor after bacteriolytic therapy. BALB/c mice harboring CT-26 mouse colon tumors were left untreated (Control) or were treated with a single i.v. injection of 300 million C. novyi-NT spores (C. novyi-NT). Twenty-four hours later, 225 μCi of [¹²⁵I]FIAU was administered via the tail vein, and planar images were taken at the indicated time points. The dotted circles indicate the tumors.