Each line indicates an individual microarray feature that is statistically significant (P < FDR 0.1, black), marginally significant (P < FDR 0.2, solid grey) or not significant (grey dashed) for genes represented by 2 microarray features (A-H), 3 microarray features (I-N) and 8 microarray features (O).
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The sentences
In most cases, those features that did not reach statistical significance followed a similar pattern (Additional file 1 Figure S1).