AmiGO Manual: Filters
Multiple options can be selected in all the filters; select more than one option by control-clicking (apple-click on a Mac) the names.
Term searches can be filtered by ontology to limit the results to the selected ontology or ontologies.
Gene Product Searches
Gene product searches can be filtered by the species and by the database from which the gene product comes. You can also filter gene products by their associations, limiting the gene products shown to those which are annotated to terms in the selected ontology (or ontologies) with the chosen evidence code(s).