The uptake and internalization of [99mTc]Tc-DT11 alone or in an equimolar mixture with [99mTc]Tc-DB7 was directly compared by 1 h incubation at 37 °C in prostate adenocarcinoma PC-3 cells, endogenously co-expressing the human GRPR [53] and NTS1R [21,27]. This evidence concerns the gene GRPR and prostate adenocarcinoma.