Sox10- Venus+ cells in the intact embryonic spinal cord. Immunohistochemical analysis of Venus+ cells in the intact embryonic spinal cord of Sox10- Venus mice. (A) Venus fluorescence did not colocalize with the pan-neuronal marker Hu in the ventral area of Sox10- Venus mice. (B-C) These Venus+ cells expressed the oligodendroglial lineage markers GSTπ and Olig2, showing that the Venus+ cells were OPCs and mature oligodendrocytes. Scale bars; (A-C) 50 μm.