when nucleosomes are thus dispersed on the basis of reaction with anti-h2b , the ratios of h2a to h4 and of ( h2b + h3 ) to h4 are identical ( +/- 8 % ) for all fractions , suggesting that each nucleosome has an identical histone complement , two each of histones h2a , h2b , h3 , and h4 .
C0028623
nucleosome
C0086411
h2b