title: Biosynthesis of RNA in two nuclear classes separated from rat cerebral cortex.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002467:Cell Nucleus / Q000378:metabolism*; D002499:Centrifugation, Density Gradient; D002540:Cerebral Cortex / Q000378:metabolism*; D004247:DNA / Q000378:metabolism; D008297:Male; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D009419:Nerve Tissue Proteins / Q000378:metabolism; D009963:Orotic Acid / Q000378:metabolism; D012313:RNA / Q000096:biosynthesis*; D051381:Rats
chemical_list: D002247:Carbon Isotopes; D009419:Nerve Tissue Proteins; D009963:Orotic Acid; D012313:RNA; D004247:DNA