title: Variations of virion sizes in different clones of Venezuelan equine encephalomyelitis virus.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D046508:Culture Techniques; D004666:Encephalitis Virus, Venezuelan Equine / Q000187:drug effects / Q000254:growth & development; D004668:Encephalitis Viruses; D005347:Fibroblasts; D005472:Fluorouracil; D014644:Genetic Variation; D005827:Genetics, Microbial; D005838:Genotype; D008854:Microscopy, Electron; D009153:Mutagens; D009154:Mutation; D010772:Phosphotungstic Acid; D013194:Staining and Labeling; D013223:Statistics as Topic; D013696:Temperature; D014776:Virus Cultivation
chemical_list: D009153:Mutagens; D010772:Phosphotungstic Acid; D005472:Fluorouracil