title: On the structure of transcriptional unit in mammalian cells.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002247:Carbon Isotopes; D002286:Carcinoma, Ehrlich Tumor / Q000378:metabolism*; D002467:Cell Nucleus / Q000378:metabolism; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000378:metabolism; D004261:DNA Replication / Q000187:drug effects; D003609:Dactinomycin / Q000494:pharmacology; D008099:Liver / Q000032:analysis* / Q000378:metabolism; D051379:Mice; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D009963:Orotic Acid / Q000378:metabolism; D010710:Phosphates / Q000032:analysis; D012313:RNA / Q000032:analysis* / Q000302:isolation & purification / Q000378:metabolism; D012333:RNA, Messenger / Q000032:analysis; D012335:RNA, Ribosomal / Q000032:analysis; D051381:Rats; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D010710:Phosphates; D012333:RNA, Messenger; D012335:RNA, Ribosomal; D014316:Tritium; D003609:Dactinomycin; D009963:Orotic Acid; D012313:RNA; D004247:DNA