GRPR and prostate neoplasm: High uptakes were observed both in human prostate tumor xenografts and mouse GRP-R-positive organs; e.g. at 4 h p.i., tumor uptake was 3.47±0.15%IA/g for [64/67Cu]-BZH5, 5.05±0.46%IA/g for [64/67Cu]-BZH6, 6.63±0.80%IA/g for [64/67Cu]-BZH7, and 4.29±0.70%IA/g for [64/67Cu]-BZH8.