Our paper, “CNS myelination requires VAMP2/3-mediated membrane expansion in oligodendrocytes”, reveals that developmental myelination requires exocytosis in oligodendrocytes to add new membrane and adhesion proteins. This sets the stage for ongoing work to understand how exocytosis is regulated (e.g. by neuronal activity) and whether this pathway is dysregulated in disease. Congrats to Mable, Koji, and the whole team! Open access version here: https://www.nature.com/articles/s41467-022-33200-4