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Reduced connexin43 expression in high‐grade human brain glioma cells

Connexin43 (cx43), a gap junction protein, is implicated in the suppression of tumor cell growth. Numerous cancer cells show a reduction or loss of cx43 expression compared to their normal counterparts. Our previous studies suggest that cx43 expression is decreased in a variety of human brain tumor cell lines. To further investigate the role of cx43 in the development of human gliomas, we performed the present study on human glioma grades I–IV.