Figure 2.

Data preprocessing - no normalisation. The plot of ranked mean of probe intensities versus their standard deviation for the raw data with background subtraction. The standard deviation shows a huge variation when compared to the mean intensities. The solid red line is a lowess smooth line of the probe intensities.

Ray et al. BMC Genomics 2012 13:190   doi:10.1186/1471-2164-13-190
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