The uptake of [99mTc]Tc-DP1-PSMAt and [99mTc]Tc-DP2-PSMAt was also studied in LNCaP prostate cancer cells, which natively express PSMA, and PC3 cells, which, like parental DU145 cells, do not express PSMA. This evidence concerns the gene FOLH1 and prostate carcinoma.