title: Ultraviolet light sensitive mutants of Ustilago violacea.
mesh_terms: D001487:Basidiomycota / Q000528:radiation effects; D002467:Cell Nucleus / Q000528:radiation effects; D002874:Chromosome Mapping; D004247:DNA; D004171:Diploidy / Q000528:radiation effects*; D005816:Genetic Complementation Test; D008027:Light; D011831:Radiation Genetics; D011995:Recombination, Genetic; D014466:Ultraviolet Rays
chemical_list: D004247:DNA