Dorsal root ganglion (DRG) neurons expressing tdTomato (red) after the sciatic injection of a viral vector. A low-magnification montage of 3 image tiles showing a Z-projection of 22 optical planes from a 100-µm-thick section of the L5 DRG. DAPI and Nissl staining (both cyan) revealed nuclei and cytoplasm of all DRG neurons. For more information, see the article by Luz et al. (pages 3245–3258). Cover image: Lidia Gomori and Peter Szucs.