title: Copper tolerance and segregation distortion in aged Paramecium.
mesh_terms: D000375:Aging; D000818:Animals; D002874:Chromosome Mapping; D003300:Copper / Q000494:pharmacology*; D005838:Genotype; D006579:Heterozygote; D010247:Paramecium / Q000187:drug effects / Q000235:genetics / Q000502:physiology*; D010641:Phenotype
chemical_list: D003300:Copper