title: Secretion of a virus-regulated factor by clonal variants of reticuloendotheliosis virus-transformed hematopoietic cells.
mesh_terms: D000818:Animals; D002472:Cell Transformation, Viral; D002645:Chickens; D002999:Clone Cells; D005814:Genes, Viral; D014644:Genetic Variation; D006412:Hematopoietic Stem Cells; D010641:Phenotype; D001356:Reticuloendotheliosis virus / Q000235:genetics*; D012190:Retroviridae / Q000235:genetics*