title: Demonstration of the precursors of ribosomal RNA in brain cells by polyacrylamide-gel electrophoresis.
mesh_terms: D000818:Animals; D001921:Brain / Q000196:embryology / Q000378:metabolism*; D002642:Chick Embryo; D004589:Electrophoresis, Disc; D008715:Methionine / Q000378:metabolism; D008745:Methylation; D008970:Molecular Weight; D012313:RNA / Q000096:biosynthesis*; D012270:Ribosomes / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D012313:RNA; D008715:Methionine