let-7b/g silencing activates AKT signaling to promote gastric carcinogenesis.

In 9 gastric cancer cells, we compared let-7b (in 22q13) and let-7g (in 3p21) expression with the DNA copy number change of their loci and found although the P -value is not significant due the limited number of cell lines, let-7b/g expression showed a trend of positive correlation with their array-CGH results (let-7b, P = 0.205; let-7g, P = 0.088; Additional file 3 : Figure S1).

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