however , the antibody induced by oligo ( adp-ribose ) associated with histones was inhibited by oligo ( adp-ribose ) with an average chain length if 4 adp-ribosyl units and by phosphoribosyl adenosine monophosphate ( pr-amp ) but not by mono adp-ribose , whereas that induced by poly ( adp-ribose ) was practically not inhibited by these related compounds even in excess amounts .
C0001461
adp-ribose
C0032403
poly ( adp-ribose