title: Formation of 61 s and 70 s particles from ribosomal subunits of Escherichia coli.
mesh_terms: D002499:Centrifugation, Density Gradient; D004926:Escherichia coli; D010452:Peptide Biosynthesis; D012329:RNA, Bacterial; D012343:RNA, Transfer; D012270:Ribosomes
chemical_list: D012329:RNA, Bacterial; D012343:RNA, Transfer