The Editors of Blood retract the 1 March 2005 paper. 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 As a result, the data underlying this figure cannot be validated, and the paper has been retracted.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.
Author notes
Prepublished online as Blood First Edition Paper, November 9, 2004; DOI 10.1182/blood-2004-08-3262.
Supported by research grants from the Human Frontier Science Program Organization and the Ministry of Education, Science, and Culture, Japan. M.J.S. was supported by a Fellowship and Program Grant from the National Health and Medical Research Council of Australia and Y.H. by a Postdoctoral Fellowship from the Cancer Research Institute. K.O. and M.J.S. contributed equally to this project.
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