Cover photograph (Copyright © 2002, American Society for Microbiology. All Rights Reserved.): Internalization of epidermal growth factor receptor (EGFR) into Rab5-positive endosomes in the presence of AG1478, monensine, and EGF in BT20 cells. The cells were transiently transfected with wild-type Rab5 and then treated with AG1478, monensin, and EGF. The colocalization (yellow) of EGFR (red) and Rab5 (green) was revealed by double immunofluorescence. (See related article in October 2002, issue 20: vol. 22, p. 7279.)