Cover photograph (Copyright © 2001, American Society for Microbiology. All rights reserved.): Three-dimensional reconstructions of cryoelectron microscopy images of native (yellow) and trypsin-digested (orange) recombinant rabies virus N RNA rings and superposition of native and trypsin-digested N RNA rings (bottom). The maps are shown in side views (left) and tilted views (right). After trypsin digestion the C-terminal part of N is removed and the images show that this domain corresponds to the inside of the top of the ring. (See related article on page 490.)