title: Origins and roles of endogenous retroviruses.
mesh_terms: D000818:Animals; D002472:Cell Transformation, Viral; D002645:Chickens / Q000235:genetics; D004279:DNA, Viral / Q000235:genetics*; D051379:Mice; D011995:Recombination, Genetic; D012190:Retroviridae / Q000502:physiology*; D013045:Species Specificity; D014779:Virus Replication
chemical_list: D004279:DNA, Viral