FOLH1 and neoplasm: In C4-2 xenograft bearing mice, the tumor-to-organ ratios did not significantly differ between [18F]AlF-PSMA-11 and [18F]PSMA-1007 for ratios including TLRmean (liver) (12.68 ± 3.06 vs 14.76 ± 5.82 respectively, p = 0.2), TMRmean (muscle) (24.07 ± 4.14 vs 22.22 ± 5.24, respectively, p = 0.91), TBRmean (blood) (12.96 ± 2.61 vs 13.20 ± 2.75, respectively, p = 0.73) and TSGRmean (salivary glands) (3.68 ± 1.05 vs 3.58 ± 1.08, respectively, p = 0.65) (Fig. 3).