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CD34 expression in low- and high-grade gliomas. CD34 immunoreactivity (brown) was mainly in the cytoplasm or membrane of glioma cells and is observed to be tubular, streak-like, comma-like and lumpy in staining shape. CD34 expression was much greater in (B) high-grade gliomas than in (A) low-grade tumors. SABC staining, magnification, ×200. SABC, streptavidin-biotin complex.
