a chromatin fraction solubilized from mouse myeloma nuclei under near-physiological ionic conditions by very mild micrococcal nuclease digestion at 0 degrees c is enriched at least 7-fold in dna complementary to total myeloma polyadenylated mrna , and 15-fold in dna originating near the replication fork ( labeled within 30 s ) .
C0008546
chromatin
C0007610
nuclei