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It has been suggested that connexin (Cx) gap junction proteins act as tumor suppressors and green tea has a potential to prevent tumor development, however, the studies on their association with human keratinocytes were rare. We evaluated the effects of a tumor promoter, phorbol-12-myristate-13-acetate (PMA), on the expression of Cxs and gap junction intercellular communication (GJIC) in human keratinocytes...
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