Cover picture: A series of confocal optical sections through the synaptic terminal of a living bipolar neuron from a goldfish retina, showing the locations of synaptic ribbons (green dots). Ribbons were tagged with a fluorescently labeled peptide that binds to the protein RIBEYE, a major component of the ribbon. Visualizing ribbons in living cells facilitates study of ribbon function at synapses that release neurotransmitter tonically. For details, see the article by Zenisek et al. in this issue (pages 9752–9759).