Representative fluorescence microphotograph of a Terc^-/- tumor cryosection double stained with an anti-CD31 antibody to visualize microvessels (red) and anti-avidin-FITC to visualize apoptotic nuclei (green), and counterstained with DAPI to visualize all tumor nuclei (blue). For details, see the article by Franco et al. on page 552 of this issue.