Figure 6From: How to decide? Different methods of calculating gene expression from short oligonucleotide array data will give different resultsExamples of the relation between PM and MM signals. Relation between the PM and MM signals of four probe sets from all 9 arrays (A...D). Only the data point are plotted when the MM signal intensity is smaller than the PM signal. In panel A and B there is no correlation between the PM and MM signals as can been seen by the low slope and Pearson correlation coefficient. This in contrast to results in panel C and D were the slope and Pearson correlation coefficient are large. These signals are obtained from the microarray scanner and are the input for the six calculation methods.Back to article page