Cover legend: In the sympathetic trunk of a CNPMyrAkt mouse, an unmyelinated Schwann cell (brown) engulfs one axon (violet) but also collagen fibers from the extracellular matrix (blue, orange). Next to it, long processes from another unmyelinated Schwann cell (yellow) are starting to wrap extracellular matrix. For more information, see the article by Domènech-Estévez, Baloui et al. (pages 4506–4521).