c("genotype: WT", "cell type: Neural stem cell")
c("genotype: WT", "cell type: Neural stem cell")
c("genotype: KO", "cell type: Neural stem cell")
c("genotype: KO", "cell type: Neural stem cell")
c("genotype: WT", "cell type: Mesenchymal stem cell")
c("genotype: WT", "cell type: Mesenchymal stem cell")
c("genotype: KO", "cell type: Mesenchymal stem cell")
c("genotype: KO", "cell type: Mesenchymal stem cell")