affymetrix_data/            Our filtered dataset of Affymetrix data (low quality and redundant
                            chips removed, see http://bgee.unil.ch/?page=documentation#sectionDataAnalysis)
                            Note that all these data come from GEO or ArrayExpress; this directory is
                            always the most up-to-date (not versioned between releases)
...............cel_files/   Affymetrix data for which the raw CEL files were available, organized by
                            experiments. The CEL files are compressed using gzip. Note that an experiment
                            can be both in this directory and in the mas5_files directory if it included
                            both types of files, for different samples.
...............mas5_files/  Affymetrix data for which only the processed MAS5 files were available,
                            organized by experiments; these files have been standardized (standardization
                            of the calls, probesets ordered, etc.). Note that an experiment can be both
                            in this directory and in the cel_files directory if it included both types of
                            files, for different samples.