CAP1 and neoplasm: Both PC-3 and IGR-CaP1 xenograft-bearing mice showed tumor uptake (PC-3, 3.58 ± 0.61 %ID/g; IGR-CaP1, 1.76 ± 0.32 %ID/g) of [77Br]Br-WC-DZ at 4 h (Figure 4A).