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2. 2 Reference: [DS2] M. A. Kuriakese et al; Selection and validation of differentially expressed genes in head and neck cancer, manuscript.

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8. 8 Nine Methods to Identify Informative Genes 1.unpaired t-test (A) 2.paried t-test (B) 3.Fisher (C) 4.Golub (D) 5.SAM (E) 6.TNOM (F) 7.Wilcoxon rank sum test (G) 8.Park (H) 9.WEPO (I)