PSCA and neoplasm: LSC images of lungs from GFP-labeled DU145 or PC3 tumor-bearing NSG mice inoculated i.v. with rhodamine B (RhB)-labeled NxP conjugated or not with anti-PSCA Abs, namely, RhB-hPSCA-NxP and RhB-NxP, respectively, showed a distinct RhB fluorescence signal 5 min after inoculation, its strong decline 10 min later, and its nearly lost after 30 min (Fig. 2m, n).