Summary
The immunoreactivity of the anti-Leu 7 (HNK-1) monoclonal antibody, a marker for natural killer cells, was evaluated with the peroxidase-antiperoxidase (PAP) method on sections of human paraffin-embedded tissues from 135 tumors of the central nervous system and five esthesioneuroblastomas. As shown independently by others, the antibody was found to react with most types of neoplastic neuroepithelial cells. Our findings indicate that the reaction is most often localized on the cytoplasmic membranes. The immunoreactive cell membranes were generally those of well-differentiated tumor cells and of neoplastic cells found in tumors that usually were not embryonal in nature. Parallel immunostaining either of the same or of successive sections with an anti-glial fibrillary acidic protein serum was of considerable assistance in discriminating between different immunoreactive cells, e.g., between astrocytes and cells presumed to be oligodendrocytes.
Despite its cross-recognition of cells of various histogenesis, the anti-Leu 7 monoclonal antibody can, in well-defined circumstances, elucidate specific differential diagnostic problems involving neurogenic neoplasms that cannot be resolved with routine staining techniques.
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Supported by a grant from the Fondation Suisse de Bourses de Médecine et Biologie (EP) and by research grant CA 31271 from the National Cancer Institute, US Department of Health and Human Services (LJR)
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Perentes, E., Rubinstein, L.J. Immunohistochemical recognition of human neuroepithelial tumors by anti-Leu 7 (HNK-1) monoclonal antibody. Acta Neuropathol 69, 227–233 (1986). https://doi.org/10.1007/BF00688298
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DOI: https://doi.org/10.1007/BF00688298