Comment on

• A more efficient method to generate integration-free human iPS cells.

  Okita K, Matsumura Y, Sato Y, Okada A, Morizane A, Okamoto S, Hong H, Nakagawa M, Tanabe K, Tezuka K, Shibata T, Kunisada T, Takahashi M, Takahashi J, Saji H, Yamanaka S. Okita K, et al. Nat Methods. 2011 May;8(5):409-12. doi: 10.1038/nmeth.1591. Epub 2011 Apr 3. Nat Methods. 2011. PMID: 21460823
• Chemically defined conditions for human iPSC derivation and culture.

  Chen G, Gulbranson DR, Hou Z, Bolin JM, Ruotti V, Probasco MD, Smuga-Otto K, Howden SE, Diol NR, Propson NE, Wagner R, Lee GO, Antosiewicz-Bourget J, Teng JM, Thomson JA. Chen G, et al. Nat Methods. 2011 May;8(5):424-9. doi: 10.1038/nmeth.1593. Epub 2011 Apr 10. Nat Methods. 2011. PMID: 21478862 Free PMC article.