we report studies of the interaction of four anthracycline antibiotics , iremycin ( im ) , daunomycin ( dm ) , aclacinomycin a ( am ) , and violamycin b1 ( vm ) , with naked dna , nucleosomal core particles , and 175 base pair ( bp ) nucleosomes lacking histone h1 .
C0028623
nucleosomes
C0019644
histone h1