we have determined that the protein-lmw dna complexes responsible for these effects are nucleosomal constituents of chromatin , since the mitogenically active fractions of these cell-free supernatants contain the constituents of core histones ( h3 , h2a , h2b , h4 ) together with lmw dna ( 140-180 bp ) , and since the immunoproliferative effects of these cell-free supernatants could be mimicked by various other nucleoprotein preparations ( including calf thymus and chicken erythrocyte nucleosomes ) .
C0019646
h2a
C0028623
nucleosomes