This image shows a newly formed ensheathing/myelinating oligodendrocyte observed after a contusion injury in a PDGFRαCreER:Rosa26-mGFP(mT/mG) transgenic mouse spinal cord. The cell was immunostained with antibodies for GFP (green) and the oligodendrocyte marker MYRF (red). For more information see the article by Assinck et al. (pages 8635–8654).