This image shows the distribution of the α2δ-1-NMDA receptor protein complex (red) in a HEK293 cell transfected with GFP (green). The proximity ligation assay signal of the α2δ-1-NMDA receptor complex was detected using anti-α2δ-1 and anti-GluN1 antibodies. See Zhou, Chen, et al. (pages 6415–6429) for details. Cover image: Hui-Lin Pan.