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Nuclear association of EP\n                    <jats:sub>1<\/jats:sub>\n                    was also found in fibroblast Swiss 3T3 cells stably overexpressing EP\n                    <jats:sub>1<\/jats:sub>\n                    and in human embryonic kidney 293 (Epstein\u2013Barr virus-encoded nuclear antigen) cells expressing EP\n                    <jats:sub>1<\/jats:sub>\n                    fused to green fluorescent protein. High-resolution immunostaining of EP\n                    <jats:sub>1<\/jats:sub>\n                    revealed their presence in the nuclear envelope of isolated (cultured) endothelial cells and\n                    <jats:italic>in situ<\/jats:italic>\n                    in brain (cortex) endothelial cells and neurons. 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