Confocal microscopy of HYD1 peptide binding to the surface of human prostate tumor cells. Live cells in suspension were incubated with bodipy conjugated HYD1 peptide for 30 minutes and the peptide (green) was observed using confocal microscopy. The nuclei are stained with propidium iodide (red). For details, see the article by DeRoock et al. on p. 3308 in this issue.