Cover legend: This image shows mouse mesenteric blood and lymphatic vessels (pale blue) and nerves (magenta) at postnatal day 4. Blood and lymphatic endothelial cells were stained by anti-PECAM. The extrinsic nerves innervating the gut were labeled by anti-PGP9.5. Schwann cells associated with the extrinsic nerves were marked by EGFP labeling with the Dhh::Cre driver (green). For more information, see the article by Uesaka et al. (pages 9879–9888).