Examples of expression plots. Changes in differential expression between MCF7 and and MCF10A cell lines. Each plot represents a gene, and provides gene transcript and exon structure similar to that presented in the X:MAP web interface. Exon data are colored by mean fold-change between MCF7 and MCF10A, and scaled relative to the mean fold change for the entire gene. Only exon-targeting probesets uniquely hitting each gene are used for the calculations. Empty boxes with a cross through them represent exons that do not have a well behaved probeset targeting them with all probes.