MA plots comparing the magnitude of change (log(signal array1) - log(signal array2)) on the y axis against the average log signal intensity (x axis)

<p><b>Copyright information:</b></p><p>Taken from "Comparison of target labeling methods for use with Affymetrix GeneChips"</p><p>http://www.biomedcentral.com/1472-6750/7/24</p><p>BMC Biotechnology 2007;7():24-24.</p><p>Published online 18 May 2007</p><p>PMCID:PMC1885795.</p><p></p> The green threshold lines show ± 2-fold changes. The color coding of the plot indicates the density of probesrepresented by that data point. The kits compared in each plot are given on the right hand side and the donor sample labeled by the kit is indicated at the top of each plot