On the cover, an immunofluorescent micrograph of a fibroblast derived from a Cav-1 null mouse embryo. This cell was transfected with caveolin-1 cDNA to reconstitute caveolar endocytosis of FITC-albumin (shown in green). Caveolin-1 immunostaining is shown in red. For details, see the article by Razani et al., pages 38121-38138.38121.