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. 2009 Dec 31;298(4):L473–L482. doi: 10.1152/ajplung.00379.2009

Fig. 1.

Fig. 1.

Steps used in gene array analysis: data normalization, selection of differentially expressed genes, categorization, visualization, confirmation, and formation of a testable hypothesis. The exploratory process, discussed in the text, involves iterations, as shown by the lines leading back to previous steps.