Comment on

• The microRNA miR-34a inhibits prostate cancer stem cells and metastasis by directly repressing CD44.

  Liu C, Kelnar K, Liu B, Chen X, Calhoun-Davis T, Li H, Patrawala L, Yan H, Jeter C, Honorio S, Wiggins JF, Bader AG, Fagin R, Brown D, Tang DG. Liu C, et al. Nat Med. 2011 Feb;17(2):211-5. doi: 10.1038/nm.2284. Epub 2011 Jan 16. Nat Med. 2011. PMID: 21240262 Free PMC article.