Comment on

• Lean, but not obese, fat is enriched for a unique population of regulatory T cells that affect metabolic parameters.

  Feuerer M, Herrero L, Cipolletta D, Naaz A, Wong J, Nayer A, Lee J, Goldfine AB, Benoist C, Shoelson S, Mathis D. Feuerer M, et al. Nat Med. 2009 Aug;15(8):930-9. doi: 10.1038/nm.2002. Epub 2009 Jul 26. Nat Med. 2009. PMID: 19633656 Free PMC article.
• Normalization of obesity-associated insulin resistance through immunotherapy.

  Winer S, Chan Y, Paltser G, Truong D, Tsui H, Bahrami J, Dorfman R, Wang Y, Zielenski J, Mastronardi F, Maezawa Y, Drucker DJ, Engleman E, Winer D, Dosch HM. Winer S, et al. Nat Med. 2009 Aug;15(8):921-9. doi: 10.1038/nm.2001. Epub 2009 Jul 26. Nat Med. 2009. PMID: 19633657 Free PMC article.
• CD8+ effector T cells contribute to macrophage recruitment and adipose tissue inflammation in obesity.

  Nishimura S, Manabe I, Nagasaki M, Eto K, Yamashita H, Ohsugi M, Otsu M, Hara K, Ueki K, Sugiura S, Yoshimura K, Kadowaki T, Nagai R. Nishimura S, et al. Nat Med. 2009 Aug;15(8):914-20. doi: 10.1038/nm.1964. Epub 2009 Jul 26. Nat Med. 2009. PMID: 19633658