when nucleosomal core histones were isolated from rat liver nuclei incubated with [ 14c ] nad+ and fractionated into the individual components ( h2a , h2b , h3 , and h4 ) , [ 14c ] adenosine diphosphate ribose ( adp-rib ) was found to be associated with all of them .
C0007610
nuclei
C0086411
h2b