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Localization of a MAR associated with Dδ1 and Dδ2 by using an in vitro MAR assay. DNA fragments produced by BamHI digestion (A) or BamHI plus EcoRI digestion (B) of plasmid pDδBm3.5 were end-labeled and tested for nuclear matrix binding. (C) Schematic map of the Dδ1/Dδ2 region. B, BamHI; Bg, BglII; E, EcoRI.
