Representative coronal images of PC-3 tumor mice at 5, 15, 30, 60, 90, and 120 min after injection of [18F]FP-d-Lys6-GnRH in the presence of d-Lys6-GnRH (15 mg/kg) are illustrated in Figure 5(b). Here, GNRH1 is linked to neoplasm.