This image shows axonal ramifications of long-range GABAergic neurons (red) in the glomerular layer of the olfactory bulb (cyan, nuclei). These neurons extend a long smooth axon for several millimeters which branches into fine terminals containing multiple synaptic boutons. The cellular targets of these long-range axons are exclusively GABAergic neurons. For more information, see the article by Villar et al. (pages 3610–3621). Cover image: Pablo Villar.