This image shows the presence of multiple T-bars, marked by the cytoskeletal protein Bruchpilot (green), at active zones of neuromuscular junction synapses in Drosophila larvae deficient in glutamate receptor subunit GluRIIC. Remaining glutamate receptors are labeled by GluRIID antibody (magenta). For more information, see the article byHong et al. (pages 2817–2827).