title: Subfractionation of heterochromatin.
mesh_terms: D000818:Animals; D002458:Cell Fractionation / Q000379:methods; D002499:Centrifugation, Density Gradient / Q000379:methods; D006570:Heterochromatin / Q000648:ultrastructure*; D008099:Liver / Q000648:ultrastructure*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D006570:Heterochromatin