Cx32 and Cx47 mediate oligodendrocyte:astrocyte and oligodendrocyte:oligodendrocyte gap junction coupling

► Cx47 mediates a bidirectional oligodendrocytes:astrocytes coupling in the neocortex. ► SR-101 labels oligodendrocytes through gap junctions (GJs). ► SR-B demonstrates fluorescent dyes demonstrate direct oligodendrocytes (O:O) coupling in white matter. ► Electron microscopy demonstrates O:O GJs in the corpus callosum.