% miRs in stem cells
@Article{pmid18079172,
   Author="Ibarra, I.  and Erlich, Y.  and Muthuswamy, S. K.  and Sachidanandam, R.  and Hannon, G. J. ",
   Title="{{A} role for micro{R}{N}{A}s in maintenance of mouse mammary epithelial progenitor cells}",
   Journal="Genes Dev.",
   Year="2007",
   Volume="21",
   Pages="3238--3243",
   Month="Dec"
}