Sample_12_0260 Mouse NCBI GEO/SRA Primary cell Embryonic_kidneys nephron progenitor cells d16.5 1.25uM CHIR 24h Sample_12_0261 Mouse NCBI GEO/SRA Primary cell Embryonic_kidneys nephron progenitor cells d16.5 5uM CHIR 24h Sample_12_0262 Mouse NCBI GEO/SRA Primary cell Embryonic_kidneys nephron progenitor cells d16.5