title: Size fractionation of exponentially growing Escherichia coli.
mesh_terms: D002247:Carbon Isotopes; D002501:Centrifugation, Zonal; D004926:Escherichia coli / Q000254:growth & development*; D008938:Mitosis; D012329:RNA, Bacterial / Q000096:biosynthesis*; D014498:Uracil / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D012329:RNA, Bacterial; D014498:Uracil