FOLH1 and neoplasm: The accumulation of [99mTc]Tc-BQ0413 in PSMA-positive PC3-pip xenografts was significantly higher than the accumulation in control PSMA-negative PC-3 and SKOV-3 xenografts (Figure 7 and Figure 11), which shows that the tracer’s tumor uptake was dependent on PSMA expression, i.e., target-specific.