FOLH1 and neoplasm: A significant difference (P ≤ 0.018; n = 3) in the uptake of PSMA-targeted MNPs was also detected between PSMA(-) tumor-bearing Group 4 mice (pretreated with PDT) and Group 5 mice (not treated with PDT), 18 h, and 42 h post-MNP administration, using T2-W MRI (Figure S13 and S14).