Takeda K, Cretney E, Hayakawa Y, Ota T, Akiba H, Ogasawara K, Yagita H, Kinoshita K, Okumura K, Smyth MJ. TRAIL identifies immature natural killer cells in newborn mice and adult mouse liver. Blood. 2005;105(5):2082-2089

The Editors of Blood retract the 1 March 2005 paper cited above. Concerns regarding the duplication of several outlying data points in Figure 4 were brought to the journal's attention. A search for original source data was unsuccessful. As a result, the data underlying this figure cannot be validated, and the paper has been retracted. Yoshihiro Hayakawa, Kouetsu Ogasawara, Ko Okumura, Kazuyoshi Takeda, and Hideo Yagita approve the retraction. No response was received from Hisaya Akiba, Erika Cretney, Katsuyuki Kinoshita, Tsuyoshi Ota, or Mark J. Smyth.