Different scans of the same hybridized microarray show different results. The representative hybridization results shown are from an ME7 infected mouse compared to a mock infected mouse. A) and B) show two scatter plots from two different scans of the same hybridized microarray. In each scatter plot, spot values from the mock infected animal are plotted on the X-axis and spots from scrapie infected animal are plotted on the Y-axis. Note that the scatter plots are different, and that in A) the spots more closely align with on the slope of 1 compared to the spots in B). The data from the scan presented in A) but not B) was used in these analyses.