title: Ultrastructural changes in the fertilized rat ovum after the administration of actinomycin D.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000187:drug effects / Q000502:physiology* / Q000648:ultrastructure; D002970:Cleavage Stage, Ovum / Q000502:physiology*; D003609:Dactinomycin / Q000494:pharmacology*; D005260:Female; D005306:Fertilization; D009028:Morula / Q000187:drug effects / Q000502:physiology* / Q000648:ultrastructure; D051381:Rats
chemical_list: D003609:Dactinomycin