Cover picture: The distal extremity of the synaptic nerve terminal at the mature toad (Bufo marinus) neuromuscular junction grows over very short periods of time. The nerve terminal (red, top) and Schwann cell (green, middle) were filled by ionophoretic injection with different fluorescent dyes and imaged on a confocal microscope. The overlay image (bottom) shows the two fine nerve terminal processes enclosed in corresponding Schwann cell processes. The smaller of the two nerve terminal processes was observed to grow over the course of 20 min. Such new processes can form functional synapses within this short period. For details, see the article by Macleod et al. in this issue (pages 2380-2392).