Evaluation Summary:
Almeida and Macklin provide one of the first studies to closely examine early oligodendrocyte behaviors at high resolution. These studies use live imaging in zebrafish to provide valuable new insights about the earliest onset of myelination in the central nervous system and add to a body of work showing how oligodendrocytes initiate and maintain myelin sheaths.
(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 and Reviewer #3 agreed to share their name with the authors.)