three groups of non-histone proteins were obtained from rat liver nuclei by separation of nucleic acids with the polyethylene glycol - dextran polymer mixture and fractionation of nuclear proteins on hydroxyapatite in the salt - glycerol - phenylmethylsulphonyl fluoride system at increasing concentration of na+ and k+ phosphate buffer , ph 6.8 .
C0019652
histone
C0028589
nuclear proteins