when sufficient antibody was present , all ( greater than 98 % ) the nucleosomes sedimented with increased velocities , indicating that all chromosomal particles contain h2b , as suggested by previous electron microscopic studies ( bustin , m. , goldblatt , d. , and sperling , r. ( 1976 ) , cell 7 , 297 ) .
C0028623
nucleosomes
C0007634
cell