title: Actinomycin D and the central granules in the nuclear pore complex: thin sectioning versus negative staining.
mesh_terms: D000818:Animals; D001692:Biological Transport; D002467:Cell Nucleus / Q000187:drug effects*; D002478:Cells, Cultured; D002843:Chromatin; D003609:Dactinomycin / Q000494:pharmacology*; D005260:Female; D008722:Methods; D008854:Microscopy, Electron; D008867:Microtomy; D010063:Ovum; D012313:RNA / Q000096:biosynthesis; D013194:Staining and Labeling; D013769:Tetrahymena pyriformis; D013997:Time Factors; D014319:Triturus; D014981:Xenopus
chemical_list: D002843:Chromatin; D003609:Dactinomycin; D012313:RNA