FIGURE 8. Images of control (A) and tumor-bearing (B) mice. (Top) Phosphor images (3-h exposure) of lung of control mouse (left) and tumor-bearing mouse (right) injected 24 h earlier with 185 kBq ¹²⁵I-IUdR preparation containing 5 µg SnUdR. (Bottom) Scintigraphic images of control mouse (left) and tumor-bearing mouse (right) injected 3 h earlier with 7.4 MBq ¹²³I-IUdR preparation containing 5 µg SnUdR. T = thyroid; L = lung (± tumor foci); S = stomach; B = bladder.