title: Equivolumetric gradients for zonal rotors: separation of ribosomes.
mesh_terms: D002458:Cell Fractionation; D002501:Centrifugation, Zonal; D002712:Chlorides; D004926:Escherichia coli / Q000032:analysis; D005055:Euglena / Q000032:analysis; D046911:Macromolecular Substances; D008274:Magnesium; D008433:Mathematics; D008722:Methods; D011189:Potassium Chloride; D012270:Ribosomes / Q000032:analysis*; D013395:Sucrose; D013997:Time Factors; D014325:Tromethamine
chemical_list: D002712:Chlorides; D046911:Macromolecular Substances; D014325:Tromethamine; D013395:Sucrose; D011189:Potassium Chloride; D008274:Magnesium