getMarkers              Get the list of samples from the panglaoDB
                        database with a pattern of expression for a set
                        of molecular markers.
getSampleComposition    Get the cell-type content for each sample from
                        the panglaoDB database.
getSampleList           Get the sample list from the panglaoDB
                        database.
getSamples              Download the expression matrix and annotations
                        from the panglaoDB database.
