Synthesis of 28-S RNA in the nucleolus.
D000818:Animals; D002466:Cell Nucleolus / Q000378:metabolism*; D002499:Centrifugation, Density Gradient; D003609:Dactinomycin / Q000494:pharmacology; D066298:In Vitro Techniques; D007700:Kinetics; D008099:Liver / Q000166:cytology / Q000378:metabolism*; D009963:Orotic Acid / Q000378:metabolism; D012313:RNA / Q000096:biosynthesis*; D051381:Rats
D003609:Dactinomycin; D009963:Orotic Acid; D012313:RNA