Cover legend: Brain of a Drosophila maggot. The synapse-associated protein of 47 kDa (white) is found in the neuropil regions of the brain hemispheres (top), and throughout the ventral nerve cord. Phalloidin (orange) is used to visualize F-actin. For more information, see the article by Saumweber et al. in this issue (pages 3508–3518).