title: RNA synthesis in penicillin spheroplasts of Escherichia coli.
mesh_terms: D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D003609:Dactinomycin; D004926:Escherichia coli / Q000378:metabolism*; D010400:Penicillin G; D010649:Phenylalanine / Q000378:metabolism; D011523:Protoplasts / Q000378:metabolism*; D012313:RNA / Q000096:biosynthesis*; D014498:Uracil / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D003609:Dactinomycin; D010649:Phenylalanine; D014498:Uracil; D012313:RNA; D010400:Penicillin G