soluble hela cell chromatin derived from nuclei treated either briefly or extensively with micrococcal nuclease was fractionated on an anti-poly ( adenosine diphosphate ribose ) -sepharose column [ malik , n. , miwa , m. , sugimura , t. , thraves , p. , & smulson , m. e. ( 1983 ) proc . natl . acad . sci . u.s.a. 80 , 2554-2558 ] to obtain fractions that were enriched or depleted in poly ( adp-ribosylated ) chromatin .
C0007610
nuclei
C0008546
chromatin