title: Formation of microspherules in nucleoli of tumor cells treated with high doses of actinomycin D.
mesh_terms: D000818:Animals; D002279:Carcinoma 256, Walker / Q000648:ultrastructure*; D002286:Carcinoma, Ehrlich Tumor / Q000648:ultrastructure*; D002466:Cell Nucleolus / Q000187:drug effects / Q000648:ultrastructure*; D003609:Dactinomycin / Q000494:pharmacology*; D008114:Liver Neoplasms, Experimental / Q000648:ultrastructure*; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000648:ultrastructure
chemical_list: D003609:Dactinomycin