RecentinsituhybridizationstudiesshowedthatmRNAlevelsofOLIGlandOLIG2transcriptionfactorsareelevatedinoligodendrogliomas.Weraisedpolyclonalantibodiesagainstasyntheticpeptidehomologoustothehumantran-scriptionfactorOliglandstudiedbyimmunohistochemistrytheexpressionofOliglin84braintumorsandinnon-neoplasticbraintissues.Alloligodendrogliomas,oligoastrocytomas,anddysembryoplasticneuroepithelialtumorsshowedmoderatetostrongintranuclearimmunoreactivityincellsmorphologicallyidentifiedasoligodendrocytes.In