title: Separation of large quantities of ribosomal subunits by zonal ultracentrifugation.
mesh_terms: D002501:Centrifugation, Zonal; D003201:Computers; D004926:Escherichia coli / Q000166:cytology*; D008722:Methods; D012270:Ribosomes; D013057:Spectrum Analysis; D013395:Sucrose; D014466:Ultraviolet Rays
chemical_list: D013395:Sucrose