FOLH1 and neoplasm: To test if PSMA-targeted fluorescence probe can be accumulated by PSMA-associated tumor vasculature in 4T1 tumors to an extent for non-invasive fluorescence imaging, mice bearing orthotopic 4T1-Luc tumors were injected with PSMA-1-Pc413, and at 24 h both fluorescence and bioluminescence images were taken Fig. 6(A).