HOMO.pl is a perl script that allows extracting important registers from an extensive data table or microarrays results. It is very useful in data mining for microarrays analysis. HOMO works as a homogenizer that converts the initial data table into more specific and manageable data according to a list of important genes or terms. This is very useful when a pathway, a condition, or a GO-Term is studied. The HOMO script has two inputs and one principal output. A table with the microarray data results is used as an input and a list of genes or important terms is used as a second input. The output is an adjusted table from the microarray results that contains only the genes included in the input list. HOMO's principal goal is to simplify the subsequent analyses to the microarray data. HOMO.pl and a suite of example files are available by electronic mail request.