For the HET-CAM model, a significantly higher accumulation (p < 0.05) in the PSMA+ tumor LNCaP C4-2 (mean (12.3 ± 6.4)%IA/mL; median: 11.0%IA/mL) compared to the PSMA− tumor PC-3 (mean: (9.3 ± 4.1)%IA/mL; median: 8.4%IA/mL) was observed for γ-counter measurements (Figure 4), resulting in a ratio of PSMA+/PSMA− of 1.5 ± 0.8. The gene discussed is FOLH1; the disease is neoplasm.