This image shows a 3D reconstruction of amygdala intercalated cells (purple) interlaced by axons from temporal association cortex (green). These axons provide auditory information to the amygdala during fear conditioning. Intercalated cells were labeled using a red fluorescent protein coupled to dopamine D1 receptors and temporal cortical axons were labeled with green fluorescent protein bounded by channelrhodopsin. For more information, see the article by Asede et al. (pages 9098–9109). Cover image: Douglas Asede.