Peak-mapper is the program to identify local differences (disconcordances) in gene expression after aligning orthologous data sets. The program takes two aligned microarray datasets (*.aln) as an input and returns a map similar to that of Event-mapper, where peaks (hot spots) correspond to gene batteries having similar disconcordances between two organisms.
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Goltsev Y, Papatsenko D.
“Time warping of evolutionary distant temporal gene expression data based on noise suppression”
BMC Bioinformatics. 2009 Oct 26;10:353.