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Heat map of the microarrays by hierarchical clustering. Heat map is a visual diagram, in which the vertical ordinates showed various chips, and the horizontal ordinates showed genes expressed in all chips. 2_3, 2_4, 2_9 were of the QFXY group. N was the Normal group. Red indicated a minimum two fold increase in expression; green represented a minimum two fold decrease in expression, compared between the Normal control and QFXY treatments.
