Sample_12_0329 Mouse NCBI GEO/SRA Primary cell Ectoderm epiblast stem cell derived OPCs Control Sample_12_0330 Mouse NCBI GEO/SRA Primary cell Ectoderm epiblast stem cell derived OPCs Vhl Sample_12_0407 Mouse NCBI GEO/SRA Tissue Ectoderm Epiblast E6.5 WT