title: Nature of the so-called fibrillar component in the segregated nucleolus after treatment of actinomycin D.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus / Q000187:drug effects* / Q000201:enzymology; D003609:Dactinomycin / Q000494:pharmacology*; D008099:Liver / Q000166:cytology; D008297:Male; D008854:Microscopy, Electron; D010434:Pepsin A / Q000494:pharmacology; D051381:Rats
chemical_list: D003609:Dactinomycin; D010434:Pepsin A