Code:
public static dynamic GetTaxonomies(int businessUnitId, int memberId, string businessUnitType)
        {
            using (var db = new ProtocolManagementDatabaseEntities())
            {
                var taxonomies = (from taxonomy in db.taxonomies
                                  join businessUnitTaxonomy in db.businessunittaxonomies on taxonomy.taxonomyid equals businessUnitTaxonomy.taxonomyid
...