ON THE COVER

This image depicts localization of ⁶⁴Cu-DOTA-Lys³-bombesin in PC-3 and CWR22 tumor-bearing mice as determined by microPET imaging (Concorde Microsystems, Inc.) followed by whole-body autoradiography. The microPET image is concordant with the whole-body autoradiographic section. Both the PC-3 tumor and the CWR22 tumor are visible, with clear contrast from the adjacent background. Prominent uptake is also seen in the liver and kidneys, and clearance of activity through the urinary bladder is evident.