title: Sedimentation studies on RNA from proplastids of ZEA mays.
mesh_terms: D002499:Centrifugation, Density Gradient; D003593:Cytoplasm / Q000032:analysis; D004926:Escherichia coli; D010759:Phosphorus Isotopes; D010936:Plant Extracts / Q000032:analysis; D011523:Protoplasts / Q000032:analysis*; D012313:RNA / Q000032:analysis*; D012270:Ribosomes / Q000032:analysis
chemical_list: D010759:Phosphorus Isotopes; D010936:Plant Extracts; D012313:RNA