c("cell type: Foreskin fibroblast", "cell line: BJ", "sample type: polyA RNA")
c("cell type: Foreskin fibroblast", "cell line: BJ", "sample type: polyA RNA")
c("cell type: Cybrid", "mtdna genotype: control", "sample type: polyA RNA")
c("cell type: Cybrid", "mtdna genotype: 5556GA", "sample type: polyA RNA")