our results show that in three of four cell types , the chromatin conformation ( as defined by relative nuclease sensitivity ) of virus preintegration sites correlates with the level of expression of the resident provirus in ev+ cells : two inactive proviruses ( ev-1 and ev-2 ) reside in nuclease-resistant chromatin domains and one active provirus ( ev-3 ) resides in a nuclease-sensitive domain .
C0007634
cells
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chromatin