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  • Title: Use of monoclonal antibodies to glial fibrillary acidic protein in the cytologic diagnosis of brain tumors.
    Author: Chen Y, Zhang YX.
    Journal: Acta Cytol; 1989; 33(6):922-8. PubMed ID: 2588925.
    Abstract:
    Monoclonal antibodies were used to immunocytochemically demonstrate glial fibrillary acidic protein (GFAP) in 174 smear preparations of brain tumor tissue in order to investigate the presence and distribution of GFAP in a variety of intracranial tumors and to evaluate the value of this technique in the cytodiagnosis of brain tumors. GFAP-positive cells were found in the astrocytic tumors and in some of the oligodendrogliomas, ependymomas and medulloblastomas. In contrast, schwannomas, meningiomas, a primary lymphoma, a hemangiopericytoma pituitary adenomas, germinomas and metastatic tumors were negative for GFAP. The cytodiagnostic accuracy of the 174 brain tumors was raised from 90.8% to 97.1% when GFAP-immunoperoxidase staining was employed to aid the routine cytologic diagnosis. These findings indicate that immunoperoxidase staining for GFAP can be successfully applied to cytologic specimens and is a useful adjunct to routine cytologic diagnosis.
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