title: An immunological approach to the structure of the ribosomal particles.
mesh_terms: D000937:Antigen-Antibody Reactions; D001426:Bacterial Proteins; D002499:Centrifugation, Density Gradient; D004926:Escherichia coli; D011233:Precipitin Tests; D012329:RNA, Bacterial; D012270:Ribosomes / Q000276:immunology*
chemical_list: D001426:Bacterial Proteins; D012329:RNA, Bacterial